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Complementary traditional Chinese medicine use in Children with cerebral palsy: a nationwide retrospective cohort study in Taiwan

BMC Complementary and Alternative Medicine volume 17, Article number: 155 (2017) Cite this article

Abstract

Background

Complementary traditional Chinese medicine (TCM) has been used to treat patients with cerebral palsy (CP). However, large-scale surveys examining its use in the treatment of CP and associated disorders are lacking.

Methods

We enrolled 11,218 patients ≤ 18 years of age with CP in the Taiwanese National Health Insurance Research Database from 1995 to 2011. Patients were categorized as TCM users (n = 6,997; 62.37%) and non-TCM users (n = 4,221; 37.63%) based on the inclusion of TCM in their treatment plan.

Results

Children with higher proportions of complementary TCM use were male, younger, and lived in urbanized areas. Most TCM users (n = 5332, 76.2%) visited TCM outpatient departments more than 20 times per year. In both groups, the three most common reasons for clinical visits were problems of the nervous system, respiratory system, and digestive system. Acupuncture was commonly used in problems of injury, musculoskeletal system and connective tissue, and nervous system. Chinese herbal medicine was used to improve the primary symptoms of CP in patients, as well as its associated disorders. The incidence rate ratios in allergic rhinitis, dyspepsia, menstrual disorders, and musculoskeletal system and connective tissue diseases among TCM users were significantly higher than non-TCM users. Although patients receiving complementary TCM therapies had higher medical expenditure for utilizing outpatient clinical consultations, their medical costs for visiting ER and hospitalization were significantly lower than that of non-TCM user within one year of the diagnosis of CP.

Conclusion

This study was a large-scale survey to characterize patterns of complementary TCM use among children with CP. The complementary use of TCM in children with CP was considerably high. Future clinical trials and basic researches can be developed based on the findings of this study.

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Background

Infantile cerebral palsy (CP) refers to a non-progressive syndrome characterized by hypoxia of the underdeveloped brain of infants or children below the age of two (prenatal or perinatal period), thereby inducing postural and motor disabilities [1]. There are many causes of CP, and most cases are believed to be due to prenatal factors. The most common risk factors for CP are prematurity, followed by intrauterine growth restriction, intrauterine infection, antepartum hemorrhage, severe placental pathology, and multiple pregnancy [2]. It is the most common motor disability in childhood with a prevalence of approximately 2 to 4 cases per 1000 children [3].

Current treatment including physical therapy and occupational therapy plays an important role in treating children with CP [4]. In addition to abnormalities of motor activity and posture, children with CP often have other disorders of cerebral function, including intellectual disability or specific learning disabilities, behavioral and emotional disorders, seizures and impaired vision and speech [5]. Therefore, teams consisting of the family and medical staff are necessary to maximize children's social and emotional development, communication, education, nutrition, mobility, and independence in daily activities [6, 7].

The integration of traditional Chinese medicine (TCM) has been widely practiced in Taiwan. It has been used to treat various pediatric diseases such as asthma [8], atopic dermatitis [9], rhinosinusitis [10, 11], diabetes [12], precocity [13], and cancer [14]. A few clinical [15] or animal [16] studies have reported treating CP with TCM, especially by acupuncture. However, there is a lack of large-scale, population-based, epidemiological analyses regarding the utilization patterns of complementary TCM for children with CP.

Since 1995, the majority of the total population in Taiwan (23 million people) has been enrolled in the mandatory National Health Insurance (NHI) program [17]. The practice of TCM has been reimbursed by the NHI program since 1996. Although the broad definition of TCM includes Chinese herbal medicine, proprietary Chinese medicine, acupuncture, moxibustion, manipulation, and Qi management, only the following three major modalities have been covered: (1) Chinese herbal medicine manufactured by GMP-certified pharmaceutical companies (concentrated scientific TCM granules), (2) acupuncture/moxibustion (including acupuncture, moxibustion and cupping therapy) and (3) Chinese orthopedic traumatology therapy (including manipulative therapy, acupressure, and tuina massage) [18]. All claims data were collected in the National Health Insurance Research Database (NHIRD).

We investigated the characteristics of adjunctive TCM use in children with CP by analyzing Taiwan’s NHIRD. This dataset comprehensively included all children who were clinically and radiographically confirmed to have CP with long-term follow-up, thus reducing the potential for sampling bias. This study was important in setting the foundation for understanding the patterns of complementary TCM utilization. The results of this study provided useful information for those involved in the healthcare of children with CP.

Methods

Data source

Taiwan launched the NHI program in March 1995, and by 2015, it covered more than 99% of Taiwanese residents [17]. Since 1995, the NHI program has reimbursed nearly all of the necessary Western medical services and included TCM services in 1996. The choice to utilize TCM or Western medicine belongs to the patient and is not influenced by the insurer. Only licensed TCM doctors are qualified for reimbursement. The large computerized NHI database (NHIRD; http://nhird.nhri.org.tw/) was provided by the National Health Insurance Administration and maintained by the National Health Research Institutes of Taiwan. The registry comprises de-identified information regarding medical care facilities, specialties, gender, birth dates, visit dates, prescriptions, health management, costs and diagnostic codes based on the International Classification of Disease, 9th Revision, Clinical Modification (ICD-9-CM). The NHIRD also established a “registry for catastrophic illnesses patient database (RCIPD)", which included approximately 30 disease categories such as cancer, schizophrenia, end-stage renal disease, multiple sclerosis and CP. Catastrophic illness certificates were administered to children with CP who had completed a clinical and neuroimaging evaluation, followed by a thorough and routine review by pediatricians or rehabilitation physicians appointed by the NHI Administration. Thus, the diagnosis of CP in children participating in this study was highly reliable.

Study subjects and variables

The flow chart for the selection of CP cases is illustrated in Fig. 1. Of all 23 million enrollees of the NHI program, patients under the age of 18 (n = 11,218) at the time of diagnosis of CP (ICD-9-CM code: 343) in the RCIPD of NHIRD were included in this study. They were then followed-up until the end of 2011. After an accurate diagnosis of CP, the children who consulted with TCM doctors were grouped as TCM users (n = 6,997), while the others were grouped as non-TCM users (n = 4,221). The demographic characteristics and claims data of this study cohort were collected and analyzed.

Fig. 1
figure 1

Flow recruitment chart of children with cerebral palsy from the registry for catastrophic illnesses patient database (RCIPD) of the Taiwanese National Health Insurance Research program from 1995 to 2011

Full size image

The urbanized residential areas of all individuals were divided into two groups, with urban areas more highly represented than rural areas. The urbanization of residential areas has been described previously [19, 20]. In brief, the residential areas of Taiwan were divided into 4 levels of urbanization based on population density (people/km2), the ratio of the population with varying educational levels, the ratio of elderly people, the ratio of agricultural workers, and the number of physicians per 100,000 people. Levels 1 and 2 of this urbanization were defined as urban areas, while levels 3 and 4 were classified as rural areas.

The concentrated scientific TCM granules included TCM herbal formulas and single herbs. Therapeutic actions and indications of TCM prescriptions were recorded based on the TCM theory [21]. The core prescription patterns were analyzed as described previously [22, 23]. In brief, an open-sourced freeware NodeXL (http://nodexl.codeplex.com/) was applied to investigate the core patterns of Chinese herb medicine for the treatment of patients with CP, and the most common two herbal combinations were applied in this network analysis. The thicker line width, defined as counts of connections between formulas and herbs, indicated the more significant prescription patterns in the network.

The medical expenditure of utilizing emergency room (ER) service, outpatient clinical care and hospitalization between patients with and without TCM treatment within one year after CP was diagnosed were calculated in New Taiwan dollars.

Ethics statement

The NHIRD was provided by the National Health Insurance Administration and managed by the National Health Research Institutes, Taiwan. All of the datasets were de-identified and encrypted to protect enrollees’ privacy. Therefore, it was not possible to identify individual patients in any way. This study was approved by the Research Ethics Committee of China Medical University and Hospital (CMUH104-REC2-115).

Statistics

The data were analyzed by using SAS software, version 9.2 (SAS Institute Inc., Cary, NC, U.S.A.). We used the chi-square test to compare categorical variables and the t-test to compare continuous variables. We estimated the incidence rate ratio and 95% confidence intervals (CIs) by using the Poisson regression. A P value <0.05 was defined as statistically significant.

Results

We identified 11,218 patients under the age of 18 who were diagnosed with infantile CP with catastrophic illness certificates (Fig. 1). Among these children, 62.37% (n = 6,997) were TCM users, while 37.63% (n = 4,221) were not TCM users. Some proportional differences were found between TCM and non-TCM users in age, sex, urbanization, and annual outpatient clinical visits (Table 1). Children with higher proportions of TCM use were male, younger (age 0–2 and 3–5), and resided in urbanized areas. Furthermore, most TCM users (n = 5,332, 76.2%) visited TCM outpatient departments more than 20 times per year. By contrast, the rate of annual outpatient visits was lower in non-TCM users than in TCM users. However, it has to be mentioned that these small differences may not be clinically significant but may be statistically significant given the large sample size.

Table 1 Demographic characteristics between TCM and non-TCM users among children with cerebral palsy from 1995–2011
Full size table

We further analyzed the frequency distribution of TCM and non-TCM visits by major disease category/diagnosis in children with CP (Table 2). In both groups, the three most common causes of clinical visits were problems of the nervous system (46.6% in TCM users versus 45.6% in non-TCM users), respiratory system (26.4% in TCM users versus 27.6% in non-TCM users), and digestive system (6.12% in TCM users versus 6.20% in non-TCM users).

Table 2 Frequency distribution of TCM and non-TCM visits by disease categories/diagnosis among children with cerebral palsy
Full size table

We also analyzed the complementary TCM treatment options that the patients received (Table 3). Chinese herbal medicine was mainly used for treating symptoms related to nervous system, respiratory system, signs and ill-defined conditions. Acupuncture was mainly used for treating problems of injury, musculoskeletal system and connective tissue disorder, and nervous system. Chinese orthopedic traumatology was mainly used for symptoms related to nervous system, mental disorder, and injury.

Table 3 Frequency distribution various TCM therapies by major disease categories/diagnosis among children with cerebral palsy
Full size table

To identify the prescription patterns of TCM doctors in treating children with CP, we also analyzed the Chinese herbal formulas and single herbs prescribed by TCM doctors (Table 4). The most commonly prescribed herbal formula was Ma-Zi-Ren-Wan (4.07%), followed by Liu-Wei-Di-Huang-Wan (3.34%) and Xiang-Sha-Liu-Jun-Zi-Tang (3.27%). The ten most common single herb prescribed by TCM doctors was Rhizoma Acori Graminei (Shi-chang-pu) (2.55%), followed by Radix et Rhizoma Rhei (Da-huang) (2.39%) and Rhizoma Gastrodiae (Tian-ma) (2.1%). The core patterns of Chinese herb medicine for the treatment of patients with CP included Xin-Yi-Qing-Fei-Tang and Radix Glycyrrhizae (Gan-cao) as well as Rhizoma Acori Graminei (Shi-chang-pu), Rhizoma Gastrodiae (Tian-ma) and Radix Polygalae (Yuan-zhi) (Fig. 2).

Table 4 The common TCM prescription for the treatment of children with cerebral palsy
Full size table
Fig. 2
figure 2

The core prescription pattern of Chinese herbal formulas and single herbs for children with cerebral palsy were analyzed through open-sourced freeware NodeXL. The thicker line width, defined as counts of connections between formulas and herbs, indicated the more significant prescription patterns in the network

Full size image

In a previous study, we found that pediatric TCM users often visited TCM clinics due to the four common diseases: allergic rhinitis, dyspepsia, menstrual disorders, and musculoskeletal system and connective tissue diseases [18]. We further analyzed the prevalence of these four common diseases between children with CP who were TCM users and non-TCM users (Table 5). In all four diseases, the proportions of TCM users were significant higher (p < 0.0001) than non-TCM users. Regarding the medical expenditure, complementary TCM users had higher medical expenditure for utilizing outpatient clinical care. However, their medical costs for visiting ER and hospitalization were significantly lower than that of non-TCM user within one year of the diagnosis of CP (Table 6).

Table 5 Incidence rate ratio of diseases between non-TCM and TCM users
Full size table
Table 6 Total medical expenditure for utilizing ER service, outpatient clinical consultations and hospitalization within one year of diagnosis of cerebral palsy
Full size table

Discussion

This population-based study characterized complementary TCM usage among children with cerebral palsy in Taiwan. In this study, we found that the proportion of TCM users in children with CP (62.37%) was much higher than average (22.5%) [18]. Our study was in accordance with a previous study in which younger children with CP used complementary and alternative more frequently [24]. The lower the age of the child with CP, the higher the proportion of TCM utilization that was found. However, this finding was not in agreement with previous studies in which older children with allergic disorders were more likely to consult with TCM services [8,9,10]. Furthermore, while both TCM users and non-TCM users exhibited high rates of annual outpatient visits, TCM users showed a higher proportion than non-TCM users. Patients with brain damage need early and comprehensive medical management. In line with some studies’ reports on the benefits of treating brain damage or neurological disorders with TCM methods [15, 25, 26], it was quite common in Taiwan to use Chinese medicine to treat children with CP. Compared to other diseases, the utilization of TCM in patients with CP was much higher [18, 27, 28]. Possible reasons for this difference included the following: (1) parents desired a variety of ways to help their ill children, (2) parents’ thought that natural products such as Chinese herbs generally had fewer side effects for developing children, and (3) the NHI program covered high-quality Chinese medical outpatient care for children with CP [29, 30], ensuring low medical costs for TCM on the part of the patients.

Children with CP often suffer from other disorders of cerebral function, such as intellectual disabilities, neurodevelopmental disorders, epilepsy, visual disorders, and speech and hearing impairments [5]. However, chronic pulmonary disease is a leading cause of death among children with severe CP [31]. The causes of pulmonary disease in these children are recurrent aspiration caused by gastroesophageal reflux and palatopharyngeal incoordination and restrictive disease due to scoliosis [31]. This may have explained why the three most common causes of clinical visits for children with CP in both TCM and non-TCM groups were related to the nervous, respiratory and digestive systems.

Therefore, children with CP did not only suffer from neurological and musculoskeletal disorders, but the therapy for CP was based on patients’ limitations in body structure and function. While medication and/or surgery may have helped to reduce spasticity, hyperreflexia, and clonus, they did not improve weakness and incoordination [32, 33]. Moreover, it was uncertain whether these interventions enhanced functional outcomes. Some reports showed that injections of botulinum toxin type A (BTX A) in combination with physical and occupational therapy improved some functional outcomes [34, 35], but this treatment did not affect associated disorders such as gastrointestinal and pulmonary dysfunction. Therefore, patients and parents needed to seek other ways to solve these problems. Previous studies also found that children with multiple disabilities chose a wide range of treatments to complement conventional therapies [24, 36]. This may have been another reason for high TCM usage in children with CP.

In Taiwan, the acceptance of acupuncture among children is lower than Chinese herbal medicine [18]. Among the children with CP, we found that many of the patients received acupuncture or Chinese orthopedic traumatology for symptoms related to injury, musculoskeletal system and connective tissue disorder, mental disorder, and nervous system. The NHI program also fully covered the integrative approaches, including tuina massage (a kind of Chinese orthopedic traumatology methods), ear acupuncture, scalp acupuncture, and somatic acupuncture together to aim to improve the quality of life in children with CP [29]. This provided an option for these children to receive the acupuncture and Chinese orthopedic traumatology.

Among the most common Chinese herbal medicine prescribed for children with CP, majority of them were indicated to treat condition related to the digestive system. Children with CP often have growth failure, which is mainly associated with poor nutrition [37] due to inadequate intake and gastrointestinal abnormalities [37,38,39,40,41]. More than 90 percent of children with CP have clinically significant gastrointestinal symptoms such as swallowing disorders, chronic constipation, regurgitation and/or vomiting, chronic aspiration, and abdominal pain [41]. Furthermore, poor digestive function could lead to chronic pulmonary disease, the main cause of death in these patients [31]. The most commonly prescribed herbal formula in TCM to relieve constipation due to deficient fluid in the colon was Ma-zi-ren-wan, also known as Hemp Seed Pill. In a previous randomized double-blind study, Ma-zi-ren-wan was shown to be safe and effective at alleviating functional constipation [42]. One of the commonly prescribed single herb, Radix et Rhizoma Rhei, was also a commonly used laxative [43]. Other herbal formulas such as Liu-wei-di-huang-wan was used for improving osteoporosis [44] and Shao-yao-gan-cao-tang for relieving muscle spasm [45]. Since neurodevelopmental disorders [46], growth failure [37], orthopedic disorders [47, 48] and osteopenia [49,50,51,52] were commonly associated disorders in children with CP, it was reasonable that some of the TCM prescriptions were used for treating these illness. Another category of TCM prescriptions, such as Chai-hu-jia-long-gu-mu-li-tang [21], Rhizoma Acori Graminei [53], Rhizoma Gastrodiae [54] and Radix Polygalae [55], were used for alleviating spasms and regulate the central nervous system. These three herbs were included in the core patterns of Chinese herb medicine for the treatment of patients with CP. Children with CP were also commonly found to have spastic syndromes [56], dyskinetic syndromes [57], epilepsy [5] and emotional disorders [46]. Various Chinese herbs, such as Xin-Yi-Qing-Fei-Tang, Ma-Xing-Shi-Gan-Tang, Bulbus Fritillariae Thunbergii and Semen Armeniacae, were used for treating respiratory symptoms. Finally, Radix Astragali was used traditionally to raise Qi and has been found to modulate immunity [58]. Taken together, some of the commonly prescribed Chinese herbs were used to complement one another to improve the main symptoms of CP. Others could help treat associated disorders that were not improved by BTX A injection, physical or occupational therapy, such as gastrointestinal and pulmonary dysfunction.

With regard to the rate of TCM and non-TCM use among the four common diseases that we previously found to be prevalent in pediatric TCM users [18], musculoskeletal system and connective tissue diseases had the highest ratio in both groups. The main concerns of patients and parents were likely related to limitations of the body’s structure and function. In all four diseases, the proportion of TCM use was significantly higher (p < 0.0001) than non-TCM use. This was consistent with our previous study that showed that the rate of TCM use for these four common diseases was higher in children in Taiwan [18].

Interestingly, although the medical expenditure for visiting outpatient clinics within one year of diagnosis of CP of complementary TCM user were higher than the non-TCM users, the medical costs for utilizing ER service and hospitalization were significantly lower. Many parents and policy-makers concerned about the costs of complementary and alternative medicine for patients with CP [59, 60]. This study provided some substantial economic evaluation for the integration of TCM treatment into the clinical healthcare of CP.

Overall, our study provided useful information regarding healthcare and epidemiological patterns of TCM use to treat children with CP. The importance of this study was based on the following aspects: First, based on the literature review and our knowledge, this study was the first large-scale investigation of complementary TCM to patients with CP. Second, this study included all patients below age 18 in the NHIRD with catastrophic illness certificates of CP. The potential for selection bias was eliminated. Third, the NHI system provides low-cost and convenient medical insurance to nearly all residents in Taiwan. Under the NHI program, both Western- and Chinese-based medical resources are very accessible. In 2012, there were approximately 59,017 Western medical doctors and 5,556 licensed TCM doctors serving 23 million people in Taiwan. Moreover, 93.7% of Taiwan’s medical institutions, including hospitals and clinics, take part in the NHI program [61].

The present study had several limitations. First, the NHI system did not reimburse purchases of healthy foods containing herbal ingredients. Second, we were unable to estimate treatment efficacy and disease severity in this study due to the lack of disease severity data in the NHIRD. Lastly, the neuroscience evidence of acupuncture and pharmacological mechanism of Chinese herbal medicine remained unclear. Therefore, we expected future studies and clinical trials to investigate the mechanism and clinical efficacy based on this study.

Conclusion

This study was a large-scale survey to characterize patterns of complementary TCM use among children with CP. The complementary use of TCM in children with CP was considerably high. The reasons for patients’ clinical visits were related to their neurodevelopmental and musculoskeletal disorders, as well as their respiratory and digestive system problems. Complementary TCM users had lower medical costs of utilizing ER service and hospitalization than non-TCM users. Future clinical trials and basic researches could be developed based on the findings of this study.

Abbreviations

95% CIs:

95% confidence intervals

BTX A:

Botulinum toxin type A

CP:

Cerebral palsy

ER:

Emergency room

NHI:

National health insurance

NHIRD:

National health insurance research database

RCIPD:

Registry for catastrophic illnesses patient database

TCM:

Traditional Chinese medicine.

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Acknowledgments

This study was supported by China Medical University under the Aim for Top University Plan of the Ministry of Education, Taiwan. This study was also supported in part by the Taiwan Ministry of Health and Welfare Clinical Trial and Research Center of Excellence (MOHW105-TDU-B-212-133019). This study was based in part on data from the National Health Insurance Research Database, provided by the National Health Insurance Administration, Ministry of Health and Welfare, and managed by National Health Research Institutes. The interpretation and conclusions contained herein do not represent those of National Health Insurance Administration, Ministry of Health and Welfare, or National Health Research Institutes.

Funding

1. China Medical University under the Aim for Top University Plan of the Ministry of Education, Taiwan.

2. Taiwan Ministry of Health and Welfare Clinical Trial and Research Center of Excellence (MOHW105-TDU-B-212-133019).

Availability of data and materials

The datasets we analyzed from NHIRD was provided by the National Health Insurance Administration and maintained by the National Health Research Institutes of Taiwan. The use of NHIRD is limited to research purposes only. Applicants must follow the Computer-Processed Personal Data Protection Law (http://www.winklerpartners.com/?p=987) and related regulations of National Health Insurance Administration and National Health Research Institutes.

Authors’ contributions

HHL, HRY and TTC conceptualized the study. CHM performed the statistical analysis. HHL, HRY, YCL, MYW, LWC, MFS and TTC contributed to the interpretation of TCM data. LWC contributed to the interpretation of Western medical data. HHL, MYW, TTC and HRY interpreted the pharmacological mechanisms. HHL, HRY and TTC drafted the manuscript. HRY and TTC finalized the manuscript. All authors read and approved the final manuscript.

Competing interests

The authors declare that they have no competing interests.

Consent for publication

Not applicable in this section.

Ethical approval and consent to participate

This study was approved by the Research Ethics Committee of China Medical University and Hospital (CMUH104-REC2-115) and also the National Health Research Institute, the data holder of the NHI database. The patient consent was exempted for the total animosity of all research data in this study.

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    Authors and Affiliations

    1. Graduate Institute of Chinese Medicine, School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan

      Hou-Hsun Liao, Hung-Rong Yen & Mao-Feng Sun

    2. Department of Chinese Medicine, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, NO. 2, Min-Sheng Road. Dalin Town, Chiayi, Taiwan, Republic of China

      Hou-Hsun Liao

    3. Department of Chinese Medicine, China Medical University Hospital, 2 Yude Road, North District, Taichung, 404, Taiwan

      Hung-Rong Yen, Yu-Chen Lee, Mao-Feng Sun & Tung-Ti Chang

    4. Research Center for Chinese Medicine & Acupuncture, China Medical University, Taichung, Taiwan

      Hung-Rong Yen

    5. Research Center for Chinese Herbal Medicine, China Medical University, Taichung, Taiwan

      Hung-Rong Yen

    6. Research Center for Traditional Chinese Medicine, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan

      Hung-Rong Yen & Mei-Yao Wu

    7. Management Office for Health Data, China Medical University Hospital, 2 Yude Road, North District, Taichung, 404, Taiwan

      Chih-Hsin Muo

    8. Graduate Institute of Acupuncture Science, College of Chinese Medicine, China Medical University, 91 Hsueh-Shih Road, North District, Taichung, Taiwan

      Yu-Chen Lee & Li-Wei Chou

    9. Department of Physical Medicine and Rehabilitation, China Medical University Hospital, 2 Yude Road, North District, Taichung, Taiwan

      Li-Wei Chou

    10. School of Post-Baccalaureate Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan

      Tung-Ti Chang

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    1. Hou-Hsun Liao
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    Liao, HH., Yen, HR., Muo, CH. et al. Complementary traditional Chinese medicine use in Children with cerebral palsy: a nationwide retrospective cohort study in Taiwan. BMC Complement Altern Med 17, 155 (2017). https://doi.org/10.1186/s12906-017-1668-5

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    BMC Complementary Medicine and Therapies

    ISSN: 2662-7671

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