Journal of the American Society of Echocardiography
Journal of the American Society of Echocardiography > 2011 > 24 > 1 > 45-52
Journal of the American Society of Echocardiography > 2011 > 24 > 7 > 720-728
Journal of the American Society of Echocardiography > 2011 > 24 > 11 > 1191-1198