1. Endoscopy Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
2. The Friendship Hospital of Ili Kazakh Autonomous Prefecture, Ili & Jiangsu Joint Institute of Health, Yining, China
3. Pancreas Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
4. Department of Biochemistry, Nanjing University of Chinese Medicine, Nanjing, China
5. Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
6. Pancreas Institute, Nanjing Medical University, Nanjing, China