title: Dual randomization in cardiovascular trials.
authors.forename: R M
authors.initials: RM
authors.lastname: Califf
mesh_terms: D002318:Cardiovascular Diseases / Q000628:therapy*; D006801:Humans; D011897:Random Allocation; D016032:Randomized Controlled Trials as Topic / Q000379:methods*; D012680:Sensitivity and Specificity