1. Key
Laboratory of Drug Targeting and Drug Delivery System (Ministery of
Education), West China School of Pharmacy, Sichuan University, NO. 17, Block 3, South Renmin Road, Chengdu 610041, P.R. China
2. Huaxi
MR Research Center (HMRRC), Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China