1 Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.
2 Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China; Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Central South University, Changsha, Hunan, China; Key Laboratory of Molecular Radiation Oncology Hunan Province, Changsha, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China; Department of Dermatology, The Second Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China. Electronic address: liji_xy@csu.edu.cn.