1 Department of Dermatology and Venereology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.
2 Department of Dermatology and Venereology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.; Institute of Pathogenic Microbiology, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China.