About the Authors

M. Kumi Smith

kumi.smith@unc.edu

Affiliation Department of Epidemiology, University of North Carolina Chapel Hill, Chapel Hill, North Carolina, United States of America

William C. Miller

Affiliation Ohio State University College of Public Health, Columbus, Ohio, United States of America

Huixin Liu

Affiliation Department of Clinical Epidemiology, Peking University People's Hospital, Beijing, People’s Republic of China

Chuanyi Ning

Affiliation University of North Carolina Institute for Global Health and Infectious Diseases, University of North Carolina, Chapel Hill, North Carolina, United States of America

Wensheng He

Affiliation Zhumadian City Centers for Disease Control, Zhumadian, Henan, People’s Republic of China

Myron S. Cohen

Affiliation University of North Carolina Institute for Global Health and Infectious Diseases, University of North Carolina, Chapel Hill, North Carolina, United States of America

Ning Wang

Affiliation National Centre for AIDS/STD Control and Prevention, China Centers for Disease Control and Prevention, Beijing, People’s Republic of China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: MKS WCM HL NW MSC. Data curation: MKS WH NW HL. Formal analysis: MKS. Funding acquisition: NW. Methodology: MKS WCM HL. Project administration: NW. Resources: NW WH. Supervision: MKS. Validation: MKS HL CN. Visualization: MKS. Writing – original draft: MKS. Writing – review & editing: MKS WCM HL NW.