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