title: The best type of trial.
authors.forename: J A Chris
authors.initials: JA
authors.lastname: Delaney
mesh_terms: D002170:Canada; D015986:Confounding Factors, Epidemiologic; D015914:Estrogen Replacement Therapy; D005260:Female; D006801:Humans; D019370:Observation; D016032:Randomized Controlled Trials as Topic