1. Department of Dermatovenereology; Chengdu Second People's Hospital; Chengdu Sichuan China
2. Department of Dermatovenereology; West PR China Hospital of Sichuan University; Chengdu Sichuan China
3. Department of Dermatovenereology; Chengdu Qingbaijiang District People's Hospital; Chengdu Sichuan China