title: Trial designs. Which one is best?
authors.affiliation: Department of Family and Community Medicine, University of Toronto.
authors.forename: M
authors.initials: M
authors.lastname: Evans
mesh_terms: D003627:Data Interpretation, Statistical; D015340:Epidemiologic Research Design; D004992:Ethics, Medical; D019317:Evidence-Based Medicine; D006801:Humans; D012107:Research Design / Q000592:standards*