1 Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China; Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, China.
2 Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China; Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, China. Electronic address: [email protected].