1. Department of Gastroenterology, Chengdu Fifth People’s Hospital, Chengdu, Sichuan, China (mainland)
2. Department of Gastroenterology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China (mainland)
3. Department of Hepatobiliary Surgery, Dongyang People’s Hospital, Jinhua, Zhejiang, China (mainland)
4. Department of Clinical Medicine, Southwest Medical University, Luzhou, Sichuan, China (mainland)
5. Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
6. Chongqing Key Laboratory of Hepatobiliary Surgery and Department of Hepatobiliary Surgery, Second Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)