1. Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China
2. Hunan Key Laboratory of Aging Biology, Xiangya Hospital, Central South University, Changsha, China
3. National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
4. Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Central South University, Changsha, China
5. Department of Social Medicine and Health Management, Xiangya School of Public Health, Central South University, Changsha, China