title: Evidence-based design improvement.
authors.forename: J André
authors.initials: JA
authors.lastname: Knottnerus
authors.forename: Peter
authors.initials: P
authors.lastname: Tugwell
mesh_terms: D003625:Data Collection; D015340:Epidemiologic Research Design; D019317:Evidence-Based Medicine; D017408:Guidelines as Topic; D006801:Humans; D011785:Quality Assurance, Health Care / Q000592:standards