Affiliation: | 1. Department of Hepatobiliary Surgery, Weifang People's Hospital, Weifang, China;2. Department of Anaesthesiology, Weifang People's Hospital, Weifang, China;3. Department of Gastroenterology, Shouguang People's Hospital, Shouguang, China;4. Department of General Surgery, Shouguang People's Hospital, Shouguang, China;5. Department of Medical Oncology, Affiliated Hospital of Weifang Medical University, Weifang, China;6. Infection Management Office, Weifang People's Hospital, Weifang, China |