1. Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu 610041, China
2. Centre for Inflammatory Bowel Disease, West China Hospital, Sichuan University, Chengdu 610041, China
3. Laboratory of Inflammatory Bowel Disease, Institute of Immunology and Inflammation, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China