Daniel, L B Comparison of transthoracic and transesophageal assessment of prosthetic valve dysfunction. [electronic resource] - Echocardiography (Mount Kisco, N.Y.) Mar 1990 - 83-95 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0742-2822 Standard No.: 10.1111/j.1540-8175.1990.tb00352.x doi Subjects--Topical Terms: AdultAgedBioprosthesisEchocardiography, Doppler--methodsFemaleHeart Valve Prosthesis--adverse effectsHeart Valves--diagnostic imagingHumansMaleMiddle AgedProsthesis FailureRetrospective Studies