echocardiography
Resting echocardiography and low-dose dobutamine echocardiography were performed        at baseline (day 3 +/- 1), and rest echocardiography was repeated after an 8-week       follow-up.
Resting echocardiography and low-dose  @OBJECT$  @PREDICAT$  @SUBJECT$  were performed        at baseline (day 3 +/- 1), and rest echocardiography was repeated after an 8-week       follow-up.