1. Department of Plastic Surgery, Affiliated Hospital of Medical Collage Qingdao University, Qingdao, China
2. Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
3. Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
4. Shanghai Pancreatic Cancer Institute, Shanghai, China
5. Pancreatic Cancer Institute, Fudan University, Shanghai, China