echocardiography: diastolic regurgitant velocity of mitral valve at end of expiration
echocardiography: diastolic regurgitant velocity of mitral valve at end of expiration
echocardiography: diastolic regurgitant velocity of mitral valve at end of expiration (procedure)
echocardiography: diastolic regurgitant velocity of mitral valve at end of expiration (procedure)