1. Central Laboratory Zhongshan Hospital (Xiamen), Fudan University Xiamen Fujian China
2. Shanghai Public Health Clinical Center Fudan University Shanghai China
3. Department of Pancreatic Surgery, Pancreatic Disease Institute Huashan Hospital, Shanghai Medical College, Fudan University Shanghai China
4. Department of Physiology and Pathophysiology Hexi University School of Medicine Zhangye Gansu China
5. Department of General Surgery Zhongshan Hospital, Fudan University Shanghai China
6. Department of Nutritional Science King's College London London UK