1. Division of Gastroenterology and Hepatology; University of North Carolina; Chapel Hill NC
2. Division of Gastroenterology; Medical University of South Carolina; Charleston SC
3. Division of Gastroenterology; University of Michigan; Ann Arbor MI
4. Division of Gastroenterology, East Carolina University; Greenville NC
5. Division of Gastroenterology; University of Southern California; Los Angeles CA
6. Duke Clinical Research Institute; Duke University; Durham NC
7. Division of Gastroenterology; Indiana University School of Medicine; Indianapolis IN
8. Division of Gastroenterology; University of Pennsylvania; Philadelphia PA
9. Liver Disease Research Branch; Division of Digestive Diseases and Nutrition, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health; Bethesda MD