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Fig. 3 | BMC Complementary and Alternative Medicine

Fig. 3

From: Wrist-ankle acupuncture (WAA) for primary dysmenorrhea (PD) of young females: study protocol for a randomized controlled trial

Fig. 3

WAA needle & Sham acupuncture needle. WAA needle is the disposable sterile needle (0.25 mm in diameter and 25 mm in length, Suzhou Medical Appliance Factory, Jiangsu Province, China), sham acupuncture needle is also used the same model needle (0.25 mm in diameter and 25 mm in length, Suzhou Medical Appliance Factory, Jiangsu Province, China), while the tip and most body was cut off and blunted with only 2-3 mm of the needle body remained

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