title: Bias in revascularization study.
authors.forename: Carl
authors.initials: C
authors.lastname: van Walraven
authors.forename: Alan J
authors.initials: AJ
authors.lastname: Forster
mesh_terms: D015982:Bias; D003324:Coronary Artery Disease / Q000601:surgery; D006333:Heart Failure / Q000601:surgery; D006801:Humans; D009204:Myocardial Revascularization; D012107:Research Design; D016019:Survival Analysis