1. Department of Hepatobiliary Surgery, Jiangxi Provincial People's Hospital, Nanchang, Jiangxi 330006, P.R. China
2. Department of Neurosurgery, Shangrao People's Hospital, Shangrao, Jiangxi 334000, P.R. China
3. Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
4. Department of Urology Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China