1. Beijing University of Chinese Medicine, Chaoyang, Beijing 100029, P.R. China
2. Shunyi Branch, Beijing Traditional Chinese Medicine Hospital, Shunyi, Beijing 101300, P.R. China
3. Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University, Dongcheng, Beijing 100010, P.R. China
4. Beijing Chinese Medicine Hospital, Pinggu Hospital, Pinggu, Beijing 101200, P.R. China
5. China Academy of Traditional Chinese Medicine, Guanganmen Hospital, Xicheng, Beijing 100053, P.R. China
6. Beijing Institute of Traditional Chinese Medicine, Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University, Dongcheng, Beijing 100010, P.R. China
7. Key Laboratory of Chinese Internal Medicine of the Ministry of Education, Beijing University of Chinese Medicine Affiliated to Dongzhimen Hospital, Dongchen, Beijing 100700, P.R. China