1. Department of Internal Medicine, University of Missouri Kansas City, Kansas City, MO
2. Department of Medicine, The University of Jordan, Faculty of Medicine, Amman, Jordan
3. Faculty of Medicine, Al-Azhar University, Gaza, Palestine
4. Department of Internal Medicine, University of Toledo, Toledo, OH
5. Department of Internal Medicine, Washington University in St. Louis, St. Louis, MO
6. Department of Epidemiology, Harvard School of Public Health, Boston, MA
7. Department of Internal Medicine, NYC Health + Hospitals, Lincoln - Weill Cornell Medical College, Bronx, NY
8. Department of Gastroenterology, ECU Health Medical Center, Greenville, NC
9. Division of Gastroenterology and Hepatology, University of Missouri Kansas City, Kansas City, MO