Singh, S PSingh, RaginiGautam, DRavikant,Bassi, S D2007-05-122009-05-302007-05-122009-05-302007-05-12Singh SP, Singh R, Gautam D, Ravikant , Bassi SD. Quadricuspid aortic valve. Journal of the Association of Physicians of India. 2007 May; 55(): 347http://imsear.searo.who.int/handle/123456789/89561engAdultAortic Valve --pathologyAortic Valve Insufficiency --pathologyBioprosthesisDyspnea --pathologyHeart Valve ProsthesisHeart Valve Prosthesis ImplantationHumansHypertrophy, Left Ventricular --ultrasonographyMaleQuadricuspid aortic valve.Case Reports