1. Oncology Department, Jiangxi Provincial People's Hospital, Nanchang, Jiangxi 330006, P.R. China
2. Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
3. Graduate School, Nanchang University, Nanchang, Jiangxi 330006, P.R. China