1. Department of General Surgery, XinHua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200092, People's Republic of China
2. Shanghai Key Laboratory of Gastric Neoplasms, Department of Surgery, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200025, People's Republic of China
3. Department of Emergency, Ruijin Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200025, People's Republic of China