How to evaluate manual therapy: value and pitfalls of randomized clinical trials.
Koes
Bart W
BW
D035061:Control Groups; D006801:Humans; D008349:Manipulation, Orthopedic / Q000379:methods* / Q000592:standards*; D018579:Patient Selection; D016032:Randomized Controlled Trials as Topic / Q000592:standards*; D012107:Research Design / Q000592:standards*; D018401:Sample Size