1. School of Pharmacy, Changzhou University, Changzhou 213164, P.R. China
2. Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
3. Food Science and Technology Program, Department of Chemistry, Faculty of Science, National University of Singapore, Singapore 117597, Singapore
4. National University of Singapore (Suzhou) Research Institute, Suzhou, Jiangsu 215123, P.R. China
5. Changzhou Second People's Hospital, Changzhou 213000, P.R. China