1. Key laboratory of Drug Targeting and Drug Delivery Systems of the Education Ministry Sichuan Engineering Laboratory for Plant‐sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
2. Department of Pharmaceutics College of Pharmacy University of Florida Gainesville Florida 32610 USA
3. Key laboratory of Smart Drug Delivery Ministry of Education School of Pharmacy Fudan University Shanghai 201203 China