title: Meta-analyses with rare events should use adequate methods.
authors.forename: Oliver
authors.initials: O
authors.lastname: Kuss
authors.forename: Jan F
authors.initials: JF
authors.lastname: Gummert
authors.forename: Jochen
authors.initials: J
authors.lastname: Börgermann
mesh_terms: D001026:Coronary Artery Bypass / Q000009:adverse effects*; D047549:Coronary Artery Bypass, Off-Pump / Q000009:adverse effects; D006801:Humans; D015201:Meta-Analysis as Topic; D016032:Randomized Controlled Trials as Topic; D012107:Research Design; D012307:Risk Factors; D020521:Stroke / Q000209:etiology*; D016896:Treatment Outcome