1. Gastrointestinal and Liver Diseases Division Keck Medicine of University of Southern California Los Angeles California USA
2. Department of Biostatistics and Epidemiology Data Center University of Pittsburgh Pittsburgh Pennsylvania USA
3. Toronto Center for Liver Disease University of Toronto Toronto Ontario Canada
4. San Francisco Center for Liver Disease California Pacific Medical & Research Institute San Francisco California USA
5. Liver Diseases Branch National Institutes of Diabetes and Digestive and Kidney Diseases National Institutes of Health Bethesda Maryland USA
6. Washington University School of Medicine and John Cochran VA Medical Center St. Louis Missouri USA
7. Baylor University Medical Center Dallas Texas USA
8. Section of Hepatology Virginia Commonwealth University Richmond Virginia USA
9. Department of Medicine University of California San Francisco San Francisco California USA
10. Massachusetts General Hospital Harvard Medical School Boston Massachusetts USA
11. Department of Pediatrics University of California San Francisco San Francisco California USA
12. Department of Internal Medicine University of Michigan Ann Arbor Michigan USA
13. Liver Center Department of Medicine Beth Israel Deaconess Medical Center Harvard University Boston Massachusetts USA
14. Division of Gastroenterology and Hepatology University of Michigan Ann Arbor Michigan USA