1 Division of Gastroenterology and Hepatology; Shanghai Institute of Digestive Disease, NHC Key Laboratory of Digestive Diseases, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
2 Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China.
3 Department of Clinical Medicine, Guangzhou Medical University, Guangzhou, China.