1. Department of Medicine, Drexel University College of Medicine, Philadelphia, PA, USA
2. Department of Medicine, Capital Health Regional Medical Center, Trenton, NJ, USA
3. Rapides Regional Medical Center, Alexandria, LA, USA
4. Department of Medicine, Seton Hall University, St. Francis Medical Center, Trenton, NJ, USA
5. Pennsylvania Hospital, University of Pennsylvania, PhiladelpShia, PA, USA
6. Penn State Hershey Heart and Vascular Institute, Hershey, PA, USA