1. Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
2. Key Laboratory for Qinghai-Tibet Plateau Phytochemistry of Qinghai Province, College of Pharmaceutical, Qinghai Nationalities University, Xining 810007, China
3. State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China