1. Department of Hepatobiliary Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi 341000, P.R. China
2. Department of General Surgery, Zhejiang Xiaoshan Hospital, Hangzhou, Zhejiang 311202, P.R. China
3. School of Nursing, Gannan Medical University, Ganzhou, Jiangxi 341000, P.R. China
4. Department of General Surgery, The People's Hospital of Ningdu County, Ganzhou, Jiangxi 342800, P.R. China
5. Department of General Surgery, The People's Hospital of Shangyou County, Ganzhou, Jiangxi 341200, P.R. China
6. Department of General Surgery, The Third Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi 341000, P.R. China
7. College of Pharmacy, Gannan Medical University, Ganzhou, Jiangxi 341000, P.R. China