1. Key Laboratory of Chinese Internal Medicine of The Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Dongcheng, Beijing 100700, P.R. China
2. Beijing Chinese Medicine Hospital PingGu Hospital, Pinggu, Beijing 101200, P.R. China
3. Department of Nephrology, Beijing Traditional Chinese Medicine Hospital, Capital Medical University, Dongcheng, Beijing 100010, P.R. China