title: Quadricuspid aortic valve.
authors.forename: C C
authors.initials: CC
authors.lastname: Chu
authors.forename: C D
authors.initials: CD
authors.lastname: Tseng
authors.forename: F T
authors.initials: FT
authors.lastname: Chiang
authors.forename: K L
authors.initials: KL
authors.lastname: Hsu
authors.forename: Y Z
authors.initials: YZ
authors.lastname: Tseng
mesh_terms: D000368:Aged; D001021:Aortic Valve / Q000002:abnormalities*; D001022:Aortic Valve Insufficiency / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology; D001027:Aortography; D001783:Blood Flow Velocity; D018618:Echocardiography, Doppler, Color; D004562:Electrocardiography; D006330:Heart Defects, Congenital / Q000150:complications / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006349:Heart Valve Diseases / Q000150:complications / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006801:Humans; D008297:Male; D013902:Radiography, Thoracic