1. Cancer Center, West China Hospital, West China Medical School, Sichuan University and Collaborative Innovation Center, Chengdu, Sichuan 610041, P.R. China
2. School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
3. Department of Respiratory Disease, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
4. Department of Oncology, Guizhou People's Hospital, Guiyang, Guizhou 510002, P.R. China