title: Crossovers in coronary artery bypass grafting trials.
authors.forename: G S
authors.initials: GS
authors.lastname: Weinstein
authors.forename: B
authors.initials: B
authors.lastname: Levin
mesh_terms: D001026:Coronary Artery Bypass / Q000379:methods*; D003627:Data Interpretation, Statistical; D006801:Humans; D016032:Randomized Controlled Trials as Topic / Q000379:methods*; D012107:Research Design