1. Clinical significance of the bicuspid aortic valve;Ward;Heart,2000
2. The quadricuspid aortic valve: a comprehensive review;Tutarel;J Heart Valve Dis,2004
3. Incidence and echocardiographic features of congenital unicuspid aortic valve in an adult population;Novaro;J Heart Valve Dis,2003
4. Pathologic aspects of cardiac valvular insufficiencies;Edwards;AMA Arch Surg,1958
5. Understanding the structure of the unicuspid and unicommissural aortic valve;Anderson;J Heart Valve Dis,2003