ALIMENTARY TRACT: Original ArticlesHod, Keren MSc; Ringel-Kulka, Tamar MD, MPH; Martin, Christopher F. MSPH; Maharshak, Nitsan MD; Ringel, Yehuda MD Author Information Departments of *Epidemiology and Preventive Medicine, School of Public Health §Gastroenterology and Liver Diseases, Tel Aviv Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel Departments of †Medicine, Division of Gastroenterology and Hepatology ‡Maternal and Child Health, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC The collection of the data set used in this study was supported by GSK. The study supported in part by NIH K23 DK075621 (to YR), RO3 DK084294 (to YR) and P30 DK34987. The authors declare that they have nothing to disclose. Reprints: Yehuda Ringel, MD, Department of Medicine, Division of Gastroenterology and Hepatology, University of North Carolina at Chapel Hill, 4107 Bioinformatics Building, 130 Mason Farm Road, Chapel...