1. Division of Biliary Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
2. Research Center for Biliary Diseases, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
3. Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China