1. Lab of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China
2. Division of Peptides Related with Human Diseases, West China Hospital, Sichuan University, Chengdu, China
3. Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
4. Department of Pathology, West China Hospital, Sichuan University, Chengdu, China
5. Department of Human Anatomy, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China