About the Authors

Zhihui Dou

Affiliation National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China

Jiahong Xu

Affiliation Westat Inc., Rockville, Maryland, United States of America

Jin Hua Jiao

Affiliation Westat Inc., Rockville, Maryland, United States of America

Ye Ma

Affiliation National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China

Stephen Durako

Affiliation Westat Inc., Rockville, Maryland, United States of America

Lan Yu

Affiliation National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China

Yan Zhao

Affiliation National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China

Fujie Zhang

treatment@chinaaids.cn

Affiliation National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China

Competing Interests

Westat is a U.S.-based employee-owned Research Organization that participated in this project through a grant from the U.S. National Institutes of Health. Westat and its authors have no affiliation with any of the manufacturers whose drugs were considered in this analysis. Authors from Westat have collaborated with Dr. Zhang in this project including study design, proposal development, data analysis and manuscript writing. The collaborations between Westat authors and Dr. Zhang does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: ZD JX JHJ FZ. Analyzed the data: ZD JX. Contributed reagents/materials/analysis tools: ZD YM FZ. Wrote the paper: JX JHJ SD. Critically reviewed the manuscript and approved the final version: FZ ZD JX JHJ YM SD LY YZ.