1. National Engineering Technology Research Center for Miao Medicine, Guizhou Engineering Technology Research Center for Processing and Preparation of Traditional Chinese Medicine and Ethnic Medicine, College of Pharmaceutical Sciences, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, P. R. China
2. West China School of Pharmacy, Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, Sichuan University, Chengdu 610041, P. R. China
3. College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, P. R. China
4. UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K.