1. Center of Infectious Diseases, West China Hospital of Sichuan University, Chengdu 610041, China
2. Department of Gastroenterology, Kanazawa University Graduate School of Health Medicine, Kanazawa, Japan
3. Department of Hepatology, Qilu Hospital of Shandong University, Jinan 250012, China
4. Department of Clinical and Experimental Medicine, University of Padova, Padova, Italy