title: Outcome of low back pain in general practice. Study's methods may have altered patients' perceptions of their pain.
authors.forename: A
authors.initials: A
authors.lastname: Hay
mesh_terms: D005194:Family Practice; D006801:Humans; D017116:Low Back Pain / Q000523:psychology / Q000628:therapy*; D010465:Perception; D012107:Research Design