1. Department of Pharmacology, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan 610041, P.R. China
2. State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
3. Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
4. Department of Radiation Genetics, Graduate School of Medicine, Kyoto University, Kyoto 606‑8501, Japan