Peking University China-Japan Friendship School of Clinical Medicine, Beijing 100029, China;
Department of Dermatology and Venereology, China-Japan Friendship Hospital, Beijing 100029, China;
Department of Dermatology and Venereology, China-Japan Friendship Hospital, Beijing 100029, China;
Department of Dermatology and Venereology, China-Japan Friendship Hospital, Beijing 100029, China;