1 Aging Research Center, Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China.
2 National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China.
3 Department of Rheumatology and Immunology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China.
4 Provincial Clinical Research Center for Rheumatic and Immunologic Diseases, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China.
5 Hunan Provincial Skin Immunization and Medical Center, Changsha, Hunan 410008, China.