1. Department of Medicine, Division of Cardiology, Heart Research Follow-up Program, University of Rochester Medical Center, 265 Crittenden Blvd., PO Box 653, Rochester, NY, USA
2. Department of Medicine, Division of Cardiology, University of Rochester Medical Center, Rochester, NY, USA
3. Heart Institute, Sheba Medical Center, Ramat Gan and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
4. Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA