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