1. Jesse Brown VA Medical Center, Chicago, IL.
2. Gastroenterology and Hepatology, Department of Medicine, University of Illinois Chicago, Chicago, IL
3. Department of Digestive Health, Orlando Regional Medical Center, Orlando, FL
4. Department of Kinesiology and Nutrition, University of Illinois Chicago, Chicago, IL
5. Division of Gastroenterology, Department of Medicine, University of Kentucky, Lexington, KY
6. Department of Health Policy and Administration, University of Illinois Chicago School of Public Health