Labovitz, A J Assessment of prosthetic heart valve function by Doppler echocardiography. A decade of experience. [electronic resource] - Circulation Sep 1989 - 707-9 p. digital Publication Type: Journal Article; Review ISSN: 0009-7322 Standard No.: 10.1161/01.cir.80.3.707 doi Subjects--Topical Terms: Echocardiography, DopplerHeart Valve ProsthesisHumansProsthesis Failure