Acupuncture for chronic knee pain: a randomised clinical trial. Authors' reply
Acupuncture in Medicine (2015) - Comments
pubmed: 25595194  doi: 10.1136/acupmed-2014-010727  issn: 1759-9873  issn: 0964-5284 

Rana S Hinman, Andrew Forbes, Elizabeth Williamson, Kim L Bennell