1. Department of Oncology, Xinqiao Hospital, Army Medical University, Chongqing, P.R. China
2. Department of Oncology, Sichuan Provincial Crops Hospital of Chinese People’s Armed Police Forces, Leshan, P.R. China
3. Department of Oncology, The People's Hospital of Qijiang District, Chongqing, P.R. China
4. Department of Cancer Center, Daping Hospital, Army Medical University, Chongqing, P.R. China