1. Department of Internal Medicine University of Genoa Genoa Italy
2. Division of Gastroenterology Beth Israel Deaconess Medical Center and Harvard Medical School Boston Massachusetts USA
3. Department of Medicine New York University School of Medicine New York New York USA
4. Duke Clinical Research Institute, Division of Gastroenterology Duke University Medical Center Durham North Carolina USA
5. University of Pennsylvania School of Medicine University of Pennsylvania Philadelphia Pennsylvania USA
6. Department of Medical Gastroenterology Sri Ramachandra University Chennai India
7. Department of Hepatology Toronto Liver Center Toronto Canada
8. Unit for Medical and Surgical Management of Digestive Diseases and CIBERehd, Valme University Hospital University of Seville Sevilla Spain
9. Centre for Hepatology University College London Medical School London UK
10. GlaxoSmithKline Collegeville Pennsylvania USA
11. GlaxoSmithKline Stockley Park Uxbridge UK
12. GlaxoSmithKline Research Triangle Park North Carolina USA