title: The quadricuspid aortic valve.
authors: Ankush
authors: A
authors: Sachdeva
authors: Biswajit
authors: B
authors: Paul
authors: A K
authors: AK
authors: Omar
mesh_terms: D001021:Aortic Valve / Q000002:abnormalities* / Q000000981:diagnostic imaging; D001022:Aortic Valve Insufficiency / Q000000981:diagnostic imaging*; D004452:Echocardiography; D017548:Echocardiography, Transesophageal; D005260:Female; D006801:Humans; D007194:India; D008875:Middle Aged