title: Re: van Tulder et al, Exercise therapy for low back pain. Spine 2000;25:2784--96.
authors.forename: R
authors.initials: R
authors.lastname: McKenzie
mesh_terms: D005081:Exercise Therapy; D006801:Humans; D017116:Low Back Pain / Q000503:physiopathology / Q000628:therapy*; D016032:Randomized Controlled Trials as Topic; D012107:Research Design