echocardiography: effective regurgitant orifice of prosthetic mitral valve with stress
echocardiography: effective regurgitant orifice of prosthetic mitral valve with stress
echocardiography: effective regurgitant orifice of prosthetic mitral valve with stress (procedure)
echocardiography: effective regurgitant orifice of prosthetic mitral valve with stress (procedure)