1 Huaxi Student Society of Oncology Research, West China School of Medicine, Sichuan University, Chengdu, Sichuan, China.
2 Department of Thoracic Cancer, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, 37# Guoxuexiang, Chengdu, 610041, Sichuan, China. Electronic address: radyoulu@hotmail.com.