https://bmccomplementmedtherapies.biomedcentral.com/articles/10.1186/1472-6882-9-21
https://bmccomplementmedtherapies.biomedcentral.com/articles/10.1186/1472-6882-9-23
https://bmccomplementmedtherapies.biomedcentral.com/articles/10.1186/1472-6882-9-25
https://bmccomplementmedtherapies.biomedcentral.com/articles/10.1186/1472-6882-9-20
https://bmccomplementmedtherapies.biomedcentral.com/articles/10.1186/1472-6882-9-22
https://bmccomplementmedtherapies.biomedcentral.com/articles/10.1186/1472-6882-9-24