1. Institute of Liver Disease, Huazhong University of Science and Technology, Wuhan, China.
2. Liaocheng People's hospital, Liaocheng, China.
3. Department of Infectious Disease, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
4. Qingdao Hospital for Infectious Disease, Qingdao, China.
5. East Lake Hospital of Shenzhen, Shenzhen, China.
6. Department of Infectious Disease, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
7. Department of Gastroenterology, the Affiliated Hospital of Qingdao University Medical College, Qingdao, China.