1. Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College, Chengdu, China
2. Liver Center, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
3. Gastrointestinal Division, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
4. Department of Microbiology, College of Basic Medical Science, Chongqing Medical University, Chongqing, China
5. Department of Infectious Disease, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
6. Department of Infectious Disease, Anhui Provincial Hospital, Anhui Medical University, Hefei, China