1. Department of Hepatobiliary Disease, 900th Hospital of the Joint Logistics Support Force, Dongfang Hospital, Xiamen University, Fuzhou, Fujian 350025, China
2. Department of Disease Prevention and Control, General Hospital of Western Theater Command, Chengdu, Sichuan 610000, China
3. Department of Hepatobiliary Disease, 900th Hospital of the Joint Logistics Support Force, Fujian Medical University, Fuzhou, Fujian 350025, China