COVID-19 Articles Chinese Experts Consensus on Pre-examination and Triage in Dermatology Clinics during the COVID-19 Outbreak Chinese Society of Dermatology, Lin Ma, Gang Wang, Qi-Ri Mu, Yu-Ping Ran, Quan-Zhong Liu, Sheng-Xiang Xiao, Xue-Jun Zhang, Jian-Zhong Zhang, Fu-Ren Zhang, Li He, Ai-Jun Chen, Xiang Chen, Jie Zheng, Rong-Ya Yang, Zhi-Rong Yao, Ping Tu, Yu-Zhen Li, Xing-Hua Gao, Jin-Hua Xu, Heng Gu, Bo Cheng, Wei Lai, Qian-Jin Lu ...... 65 Experts Opinion on the Use of Biologic Agents in Psoriatic Patients during COVID-19 Outbreak Gang Wang, Heng Gu, Min Zheng, Yi Zhao, Jun Gu, Hong-Zhong Jin, Xiao-Ming Liu, Yu-Ling Shi, Qing Sun ...... 68 Prevention and Treatment of Skin Damage Caused by Personal Protective Equipment: Experience of the First-Line Clinicians Treating SARS-CoV-2 Infection Nuo-Ya Zhou, Liu Yang, Li-Yun Dong, Yan Li, Xiang-Jie An, Jing Yang, Liu Yang, Chang-Zheng Huang, Juan Tao ...... 70

Guideline Article Chinese Experts Consensus on Biologic Therapy for Psoriasis Chinese Society of Dermatology, China Dermatologist Association, Dermatology and Venereology Specialized Committee of Chinese Association of Integrative Medicine, Ai-Jun Chen, Xing-Hua Gao, Heng Gu, Jun Gu, Fei Hao, Xian Jiang, Hong-Zhong Jin, Xiao-Jing Kang, Cheng-Xin Li, Yu-Zhen Li, Xiao-Ming Liu, Yu-Ling Shi, Qing Sun, Gang Wang, Bin Yang, Jun-Ling Zhang, Xi-Bao Zhang, Xue-Jun Zhang, Yi Zhao, Min Zheng ...... 76

Original Articles Epidemiology of Genital Chlamydial Infection in China in 2019 Xiao-Li Yue, Xiang-Dong Gong, Jing Li, Jia-Hui Zhang, Heng Gu ...... 86 Atherogenic Diet Accelerates Ectopic Mineralization in a Mouse Model of Pseudoxanthoma Elasticum Jing-Yi Zhao, Joshua Kingman, Ida Joely Jacobs, Jouni Uitto, Yi Cao, Qiao-Li Li ...... 91

Review Articles Overview on Keloid Disorder: Phenotypic Spectrum, Connective Tissue Pathology, and Treatment Development Shan Wang, Jie Yang, Edward Macarak, Peter Wermuth, Joel Rosenbloom, Jouni Uitto ...... 97 Beta Human Papillomavirus and Merkel Cell Polyomavirus in Skin Neoplasms Qun Lv, Yun Ye, Li-Ming Li, Feng-Juan Li, Yi-Lin Wu, Ming-Jun Jiang ...... 104

Case Reports Linagliptin-Associated Bullous Pemphigoid: The First Case in China Yang-Chun Liu, Wen-Ling Zhao, Li Li ...... 113 Seborrheic Keratosis in a Young Woman: A Mimicker of Keratoacanthoma Wen-Rui Li and Lin Lin ...... 116 Lues Maligna in an Immune-Reconstituted Patient with Retroviral Infection: A Case Report Louis Y . Tee, Chee Hian Tan, Michelle M .F . Chan, Hei Man Wong, Shiu Ming Pang, Yi Wei Yeo ...... 118 Eccrine Spiradenoma of the Forehead: A Case Report Xin-Xin Yang, Qian Zhang, Li-Ming Huang, Wei Zhang, Xin-Feng Wu ...... 121 Azathioprine Hypersensitivity Syndrome in an Asian Woman Li-En Tao, Xue-Yan Chen, Bing-Xi Yan, Xiao-Yong Man ...... 123 A Case of Condyloma Acuminatum on the Nipple Detected via Dermoscopy Li-Wen Zhang, Wen-Ju Wang, Cong-Hui Li, Lei Xu, Xue-Ying Liu, Lu Zheng, Dong-Xian Liu ...... 125

Atlas of Dermatopathology Targetoid Hemosiderotic Nevus Kai-Lv Sun and Jian-Min Chang ...... 127