1. Department of Radiology, Department of Biotherapy, Huaxi MR Research Center (HMRRC), Cancer Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu 610041, China
2. Amgen Bioprocessing Centre, Keck Graduate Institute, Claremont, CA 91711, USA
3. Functional and Molecular Imaging Key Laboratory of Sichuan Province and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu 610041, China