title: Quadricuspid aortic valves: a review.
authors.forename: Oktay
authors.initials: O
authors.lastname: Tutarel
mesh_terms: D001021:Aortic Valve / Q000002:abnormalities*; D001022:Aortic Valve Insufficiency / Q000000981:diagnostic imaging / Q000453:epidemiology* / Q000209:etiology; D017548:Echocardiography, Transesophageal; D006801:Humans