1 Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041; Department of Dermatovenereology, Medical Center of Dujiang Yan, Chengdu, Sichuan 611830, China.
2 Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.