echocardiography: systolic peak flow gradient of prosthetic pulmonary valve at end of expiration
echocardiography: systolic peak flow gradient of prosthetic pulmonary valve at end of expiration
echocardiography: systolic peak flow gradient of prosthetic pulmonary valve at end of expiration
echocardiography: systolic peak flow gradient of prosthetic pulmonary valve at end of expiration