1. Department of Internal Medicine, North Florida Regional Medical Center, University of Central Florida (Gainesville), Gainesville, USA
2. Department of Internal Medicine, Dow University of Health Sciences (DUHS), Karachi, Pakistan
3. Department of Internal Medicine, Post Doc Fellow Cardiology at Beth Israel Deaconess Medical Center, Boston, MA
4. Department of Internal Medicine, Agha Khan University Hospital, Karachi, Pakistan
5. Department of Internal Medicine, Ziauddin Medical University Hospital, Karachi, Pakistan