1. Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota, USA
2. Division of Gastroenterology and Hepatology, Weill Cornell Medical College, New York, New York, USA
3. Yale Viral Hepatitis Program, Yale University School of Medicine, New Haven, Connecticut, USA
4. Section of Hepatology, Division of Digestive Diseases, Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois, USA
5. Division of Gastroenterology and Hepatology, University of Michigan, Ann Arbor, Minnesota, USA
6. Department of Pathology, The University of Hong Kong, Hong Kong, China
7. State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong, China