1. Department of Hepatobiliary Surgerythe Second Affiliated Hospital of Chongqing Medical University Chongqing China
2. Department of Geriatricsthe Fifth People's Hospital of Chengdu Chengdu China
3. Department of Endocrine and Breast Surgerythe First Affiliated Hospital of Chongqing Medical University Chongqing China
4. Department of Hepatobiliary SurgeryThe People's Hospital of Dazu District Chongqing China
5. Department of Nutrition and Food HygieneSchool of Public Health and Management, Chongqing Medical University Chongqing China
6. Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in HealthChongqing Medical University Chongqing China
7. Pediatric Surgery CenterQingdao Women and Children's Hospital, Qingdao University Qingdao Shandong China
8. Department of Gastrointestinal Surgerythe Second Affiliated Hospital of Chongqing Medical University Chongqing China