title: Case definitions in primary care. The need for clinical epidemiology.
authors.forename: M
authors.initials: M
authors.lastname: Von Korff
mesh_terms: D006801:Humans; D008403:Mass Screening / Q000592:standards*; D001523:Mental Disorders / Q000453:epidemiology*; D011320:Primary Health Care / Q000592:standards*; D011795:Surveys and Questionnaires / Q000592:standards*