title: Treatment trials in real world settings. Methodological issues and measurement of disability and costs.
authors.forename: W
authors.initials: W
authors.lastname: Katon
mesh_terms: D002986:Clinical Trials as Topic / Q000592:standards*; D003863:Depression / Q000628:therapy*; D004185:Disability Evaluation; D014943:Global Health; D017048:Health Care Costs; D006801:Humans