1 Department of Dermatovenereology (Zhang, Chen), Chengdu Second People's Hospital, Chengdu, Sichuan, China; Sexually Transmitted Disease Institute (Wu), Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China.
2 Department of Dermatovenereology (Zhang, Chen), Chengdu Second People's Hospital, Chengdu, Sichuan, China; Sexually Transmitted Disease Institute (Wu), Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China 13980427003@163.com.