Hambrecht Rainer, Berra Kathy, Calfas Karen J
Klinikum Links der Weser, Department of Cardiology and Angiology, Heart Center Bremen, Senator-Weßling-Strasse 1, Bremen, Germany.
Circulation. 2013 Jun 4;127(22):e642-5. doi: 10.1161/CIRCULATIONAHA.113.000821.