1. Department of General Surgery (Hepatopancreatobiliary Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
2. Academician (Expert) Workstation of Sichuan Province, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
3. Department of Health Management, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China