1. Postdoctoral Research Station of China Academy of Chinese Medical Sciences, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, P.R. China
2. Institute of Gerontology, China Academy of Chinese Medical Sciences, Beijing, P.R. China
3. National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, P.R. China
4. Zhengzhou Hospital of Traditional Chinese Medicine, Zhengzhou, P.R. China