title: The external validity of randomized controlled trials; implications for clinical care.
authors: G A
authors: GA
authors: Hitman
mesh_terms: D003924:Diabetes Mellitus, Type 2 / Q000453:epidemiology*; D003925:Diabetic Angiopathies / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D016032:Randomized Controlled Trials as Topic