1. Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
2. Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
3. Hepatology Unit, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
4. Graceland Medical Center, the, Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
5. Department of Gastroenterology, the Third Affiliated Hospital of Southern Medical University, Guangzhou, China
6. Integrative Microecology Center, Department of Gastroenterology, Shenzhen Hospital, Southern Medical University, Shenzhen, China