1. Department of General surgery, The People’s Hospital of Chizhou, Chizhou, Anhui Province, China
2. Department of Nursing, The People’s Hospital of Chizhou, Chizhou, Anhui Province, China
3. Department of General surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
4. Department of Emergency Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
5. Department of general surgery, Anqing First People’s Hospital, Anqing, Anhui Province, China