About the Authors

Dong-Yan Zhang

Affiliation Chinese Academy of Medical Sciences and Peking Union Medical College Institute of Dermatology, Nanjing, China

Yue-Ping Yin

Affiliations Chinese Academy of Medical Sciences and Peking Union Medical College Institute of Dermatology, Nanjing, China, National Center for STD Control, China CDC, Nanjing, China

Tie-Jian Feng

Affiliation Shenzhen Center for Chronic Disease Control and Prevention, Shenzhen, China

Fu-Chang Hong

Affiliation Shenzhen Center for Chronic Disease Control and Prevention, Shenzhen, China

Ning Jiang

Affiliations Chinese Academy of Medical Sciences and Peking Union Medical College Institute of Dermatology, Nanjing, China, National Center for STD Control, China CDC, Nanjing, China

Bao-Xi Wang

Affiliations Chinese Academy of Medical Sciences and Peking Union Medical College Institute of Dermatology, Nanjing, China, National Center for STD Control, China CDC, Nanjing, China

Xiang-Sheng Chen

chenxs@ncstdlc.org

Affiliations Chinese Academy of Medical Sciences and Peking Union Medical College Institute of Dermatology, Nanjing, China, National Center for STD Control, China CDC, Nanjing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: XSC BXW YPY DYZ. Performed the experiments: DYZ. Analyzed the data: DYZ XSC. Contributed reagents/materials/analysis tools: DYZ YPY TJF FCH NJ BXW XSC. Wrote the paper: DYZ XSC. Coordinated specimen collection in study sites: TJF FCH. Interpreted the data: DYZ YPY NJ BXW XSC.