Comparison of outcome of asymptomatic to symptomatic patients older than 20 years of age with valvular aortic stenosis

Kelly TA, Rothbart RM, Cooper CM, Kaiser DL, Smucker ML, Gibson RS. Comparison of outcome of asymptomatic to symptomatic patients older than 20 years of age with valvular aortic stenosis. Am J Cardiol. 1988; 61(1): 123–30.