1. State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China
2. Department of Pharmacology and Pharmacy, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong 999077, China
3. School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
4. Department of Dermatology, School of Medicine, University of California, San Diego, California 92093, USA