1. Department of the Endocrine and Breast Surgery; The First Affiliated Hospital of Chongqing Medical University, Chongqing Medical University; Chongqing China
2. Department of Gastrointestinal Surgery; The First Affiliated Hospital of Chongqing Medical University, Chongqing Medical University; Chongqing China
3. Division of Biostatistics and Data Science, Department of Population Health Sciences; Medical College of Georgia, Augusta University; Augusta Georgia
4. West China School of Public Health; Sichuan University; Chengdu China
5. Institute of Hospital Management; West China Hospital, Sichuan University; Chengdu China
6. West China Hospital/West China School of Nursing; Sichuan University; Chengdu China