About the Authors

Xiping Huan

Contributed equally to this work with: Xiping Huan, Weiming Tang

Affiliation Jiangsu Provincial Central for Disease Prevention and Control, Nanjing, Jiangsu, China

Weiming Tang

Contributed equally to this work with: Xiping Huan, Weiming Tang

Affiliation Department of Epidemiology, School of Public Health, University of California Los Angeles, Los Angeles, California, United States of America

Giridhara R. Babu

Affiliation Department of Epidemiology, School of Public Health, University of California Los Angeles, Los Angeles, California, United States of America

Jianjun Li

Affiliation Jiangsu Provincial Central for Disease Prevention and Control, Nanjing, Jiangsu, China

Min Zhang

Affiliation Nanjing Center for Disease Control and Prevention, Nanjing, Jiangsu, China

Xiaoyan Liu

Affiliation Jiangsu Provincial Central for Disease Prevention and Control, Nanjing, Jiangsu, China

Hongjing Yan

Affiliation Jiangsu Provincial Central for Disease Prevention and Control, Nanjing, Jiangsu, China

Gengfeng Fu

Affiliation Jiangsu Provincial Central for Disease Prevention and Control, Nanjing, Jiangsu, China

Jinkou Zhao

Affiliation Monitoring and Evaluation Unit, The Global Fund to Fight AIDS, Tuberculosis and Malaria, Geneva, Switzerland

Haitao Yang

yht@jscdc.cn (H. Yang); detels@ucla.edu (RD)

Affiliation Jiangsu Provincial Central for Disease Prevention and Control, Nanjing, Jiangsu, China

Roger Detels

yht@jscdc.cn (H. Yang); detels@ucla.edu (RD)

Affiliation Department of Epidemiology, School of Public Health, University of California Los Angeles, Los Angeles, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: WT XH GRB. Contributed reagents/materials/analysis tools: WT XH GRB. Wrote the paper: WT XH GRB JL MZ XL H. Yan GF JZ H. Yang RD. Conceived and designed procedures and methods for the study: XH WT. Involved in conceptualization of data analysis: GRB. Developed initial drafts of paper: GRB. Involved in study: JL MZ XL H. Yan GF JZ H. Yang. Involved in all stages of manuscript development: XH WT GRB JL MZ XL H. Yan GF JZ H. Yang RD. Supervised the paper getting to the final shape: RD.