Philippe Pibarot1, Partho Sengupta2, Y Chandrashekhar3. 1. Department of Cardiology, Quebec Heart & Lung Institute, Laval University, Quebec City, Quebec, Canada. 2. Division of Cardiology, West Virginia University Heart and Vascular Institute, West Virginia University, Morgantown, West Virginia. 3. Division of Cardiology, University of Minnesota and Veterans Affairs Medical Center, Minneapolis, Minnesota. Electronic address: shekh003@umn.edu.