1 Department of Dermatology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
2 Department of Microbiology, Infectious Diseases, and Immunology, Charité-Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.
3 Department of Dermatology, Peking University People's Hospital, Beijing, China.