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. Department of Social Medicine and Health Management, Xiangya School of Public Health Central South University Changsha China
5. Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital Central South University Changsha China