title: Point of view.
authors.forename: Robert B
authors.initials: RB
authors.lastname: Keller
mesh_terms: D006801:Humans; D017063:Outcome Assessment, Health Care / Q000379:methods / Q000592:standards*; D011237:Predictive Value of Tests; D011594:Psychometrics; D015203:Reproducibility of Results; D012600:Scoliosis / Q000175:diagnosis*; D018434:Sickness Impact Profile; D011795:Surveys and Questionnaires / Q000592:standards*