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, Al-Azhar University- Faculty of Medicine, Gaza, Palestine
4. Faculty of Medicine, Cairo University, Cairo, Egypt
5. Department of Internal Medicine, University of Toledo, Toledo, OH
6. Department of Gastroenterology, ECU Health Medical Center, Greenville, NC
7. Division of Gastroenterology Hepatology & Motility, The University of Kansas School of Medicine, Kansas City, KS