Levine Robert A, Schwammenthal Ehud, Song Jae-Kwan
Cardiac Ultrasound Laboratory, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.
Heart Institute, Chaim Sheba Medical Center, Tel Hashomer, Tel Aviv University, Tel Aviv, Israel.
J Am Coll Cardiol. 2014 Nov 11;64(19):1996-9. doi: 10.1016/j.jacc.2014.09.010. Epub 2014 Nov 3.