1. Institute of Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China
2. Physical Examination Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
3. Provincial Key Laboratory of TCM Diagnostics, Hunan University of Traditional Chinese Medicine, Changsha, Hunan, China
4. Department of Gerontology, Xiangya Hospital, Central South University, Changsha, Hunan, China