1. State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, China
2. Program in Molecular Medicine, Department of Molecular Cell and Cancer Biology, University of Massachusetts Medical School, Worcester, Massachusetts 01655, USA
3. Sixth Unit of Internal Medicine, Dujiangyan Medical Center, Dujiangyan, Sichuan 611830, China
4. Department of Nursing, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China