1 Department of Dermatology, The East Division of The First Affiliated Hospital, Sun Yat-sen University, 183 Huangpu Rd. E., Guangzhou 510700, China.
2 Department of Dermatology, The First Affiliated Hospital of Gannan Medical College, Ganzhou 341000, Jiangxi Province, China.
3 Department of Dermatology, The East Division of The First Affiliated Hospital, Sun Yat-sen University, 183 Huangpu Rd. E., Guangzhou 510700, China. Electronic address: luodq@mail.sysu.edu.cn.