Popma Jeffrey J, Khabbaz Kamal
Division of Cardiology, Department of Internal Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts.
Division of Cardiothoracic Surgery, Department of Surgery, Beth Israel Deaconess Medical Center, Boston, Massachusetts.
J Am Coll Cardiol. 2014 Sep 30;64(13):1335-8. doi: 10.1016/j.jacc.2014.07.952.