Edmond McM. Herrold

Prediction of indications for valve replacement among asymptomatic or minimally symptomatic patients with chronic aortic regurgitation and normal left ventricular performance.

P. Kligfield, R. Devereux, M. Aschermann, 1998, Circulation.

Mitral regurgitation: natural history in operated and unoperated patients.

E. Herrold, J. Borer, O. Isom, 2002, Advances in cardiology.