1. Geisinger Heart Institute, Geisinger Commonwealth School of Medicine, MC 36-10, 1000 E Mountain Blvd, Wilkes-Barre, PA, USA
2. Department of Cardiology, CHI-Franciscan, Tacoma, WA, USA
3. Department of Cardiology, Baptist Health Louisville, Louisville, KY, USA
4. Department of Cardiology, Mayo Clinic, Rochester, MN, USA