1. School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
2. Beijing Institute of Traditional Chinese Medicine, Beijing Hospital of Traditional Chinese Medicine, Affiliated to Capital Medical University, Beijing, China
3. Department of Chemistry and Biochemistry, University of North Carolina at Wilmington, Wilmington, NC, USA
4. School of Basic Medical Science, Beijing University of Chinese Medicine, Beijing, China
5. Department of Tibetan medicine, Tibetan Traditional Medical College, Lhasa, China