1. Jiangsu Engineering Research Centre for Efficient Delivery System of TCM, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China;
2. State Key Laboratory of Pharmaceutical Biotechnology, School of Life Science, Nanjing University, Nanjing, China;
3. Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, USA;
4. Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, USA;
5. State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing, China