1. Department of Internal Medicine, Abington Hospital - Jefferson Health, Abington, PA, USA.
2. Department of Internal Medicine, Fauji Foundation Hospital, Rawalpindi, Pakistan.
3. Department of Internal Medicine, University of South Dakota Sanford School of Medicine, SD, USA.
4. Department of Internal Medicine, Florida Hospital Orlando, Orlando, FL, USA.
5. Department of Gastroenterology, Advent Health Orlando, FL, USA.
6. Division of Cardiology, St. Mary Medical Center, Langhorne, PA, USA.