| Affiliation: | 1. Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia;2. Department of Epidemiology, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire;3. Department of Medicine, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire;4. University of North Carolina School of Medicine, Chapel Hill, North Carolina;5. Division of Digestive Diseases, Department of Medicine, School of Medicine, Emory University, Atlanta, Georgia;6. Consultants in Gastroenterology, West Columbia, South Carolina;7. Winship Cancer Institute, Emory University, Atlanta, Georgia |
