title: Direct and indirect randomized trials of screening: the A's and D's of evidence-based clinical practice guidelines.
authors.affiliation: Department of Medicine, University of Western Ontario, London. jl.Mahon@lhsc.on.ca
authors.forename: J
authors.initials: J
authors.lastname: Mahon
mesh_terms: D002170:Canada; D003920:Diabetes Mellitus / Q000175:diagnosis; D019317:Evidence-Based Medicine; D006801:Humans; D008403:Mass Screening; D008962:Models, Theoretical; D017410:Practice Guidelines as Topic; D016032:Randomized Controlled Trials as Topic; D012107:Research Design