1 School of Chinese Materia, Beijing University of Chinese Medicine, Beijing, China.
2 Department of Medical Imaging, Fangshan Hospital, Beijing University of Chinese Medicine, Beijing, China.
3 Department of Rheumatology, Fangshan Hospital, Beijing University of Chinese Medicine, Beijing, China.
4 Department of Traditional Chinese Medicine, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.