title: External controls limit effectiveness.
authors.forename: M J
authors.initials: MJ
authors.lastname: Yaffe
mesh_terms: D003154:Community Medicine / Q000193:education*; D005180:Faculty, Medical / Q000592:standards*; D005194:Family Practice / Q000193:education*; D006801:Humans; D007396:Internship and Residency / Q000331:legislation & jurisprudence / Q000592:standards*; D011792:Quebec