1. Department of
Internal Medicine, Division of Gastroenterology and Hepatology, University of Missouri, Columbia, Missouri, USA
2. Department of Radiology, University of Missouri, Columbia, Missouri, USA
3. Department of Internal Medicine, Division
of Gastroenterology, West Virginia University- Charleston Campus, Charleston, West Virginia, USA
4. Milwaukee College of Letters & Science, Milwaukee, University of Wisconsin, Wisconsin, USA
5. Department of Internal
Medicine, Division of Gastroenterology, Summa Health System and Northeast Ohio Medical University, Akron, Ohio, USA