Affiliation: | 1. Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy, Sichuan University, Chengdu, 610041 (P.R. China), Fax: (+86)?28‐85503842;2. Innovative Drug Research Centre and College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331 (P.R. China), Fax: (+86)?23‐65678750 |