1. Department of Pathology, The University of Hong Kong, Hong Kong, Hong Kong
2. State Key Laboratory of Liver Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong
3. Division of Gastroenterology and Hepatology, University of Michigan, Ann Arbor, Michigan, USA
4. Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota, USA