title: GP investigators.
authors.forename: Penny
authors.initials: P
authors.lastname: Owen
mesh_terms: D019317:Evidence-Based Medicine; D005194:Family Practice / Q000458:organization & administration / Q000592:standards*; D006801:Humans; D017410:Practice Guidelines as Topic; D016032:Randomized Controlled Trials as Topic; D012106:Research; D006113:United Kingdom