1. Department of Medicine, University of Missouri-Kansas City, Kansas City, MO
2. Faculty of Medicine, Al-Quds University, Jerusalem, Palestine
3. Department of Medicine, The University of Jordan - Faculty of Medicine, Amman, Jordan
4. Department of Medicine, Al-Azhar University - Faculty of Medicine, Gaza, Palestine
5. Department of Internal Medicine, NYC Health + Hospitals, Lincoln - Weill Cornell Medical College, Bronx, NY
6. Department of Epidemiology, Harvard School of Public Health, Boston, MA
7. Department of Internal Medicine, Washington University in St. Louis, St. Louis, MO
8. Department of Internal Medicine, University of Toledo, Toledo, OH
9. Department of Internal Medicine, Rutgers New Jersey Medical School, Newark, NJ
10. Department of Medicine, Tufts Medical Center, Boston, MA
11. Division of Gastroenterology Hepatology & Motility, The University of Kansas School of Medicine, Kansas City, KS
12. Division of Gastroenterology, University of Missouri-Kansas City, Kansas City, MO
13. Department of Medicine, Section of Gasteroenterology and Hepatology, Baylor College of Medicine, Houston, TX