1. Department of Medicine, CAMC-WVU, Charleston, WV, USA
2. Department of Medicine, Rapides Regional Medical Center, Alexandria, LA, USA
3. Department of Medicine, Jinnah Medical & Dental College, Karachi, Pakistan
4. Department of Cardiology, Rapides Regional Medical Center, Alexandria, LA, USA
5. Department of Cardiology, Case Western Reserve University, Cleveland, OH, USA