title: [Acupuncture helps in knee osteoarthritis. Was it really a blind study?].
authors.forename: Dieter
authors.initials: D
authors.lastname: Wettig
mesh_terms: D026881:Acupuncture; D018849:Controlled Clinical Trials as Topic; D004311:Double-Blind Method; D006801:Humans; D020370:Osteoarthritis, Knee / Q000628:therapy*; D010147:Pain Measurement; D015990:Placebo Effect; D012107:Research Design