1. Department of Respiratory Disease, The Third Affiliated Hospital of Beijing University of Traditional Chinese Medicine, Beijing 100029, P.R. China
2. Department of Ocular Diseases, Eye Hospital, China Academy of Chinese Medical Sciences, Beijing 100040, P.R. China
3. Department of Pathology, Dongzhimen Hospital Affiliated to Beijing University of Traditional Chinese Medicine, Beijing 100700, P.R. China
4. Department of Pathology, Beijing University of Traditional Chinese Medicine, Beijing 100029, P.R. China
5. Department of Encephalopathy, The Third Affiliated Hospital of Beijing University of Traditional Chinese Medicine, Beijing 100029, P.R. China