About the Authors

Laura G. Wesolowski

To whom correspondence should be addressed. E-mail: lig7@cdc.gov

Affiliation Division of HIV/AIDS Prevention, National Center for HIV, STD and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Duncan A. MacKellar

Affiliation Division of HIV/AIDS Prevention, National Center for HIV, STD and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Steven F. Ethridge

Affiliation Division of HIV/AIDS Prevention, National Center for HIV, STD and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Julia H. Zhu

Affiliation Division of HIV/AIDS Prevention, National Center for HIV, STD and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

S. Michele Owen

Affiliation Division of HIV/AIDS Prevention, National Center for HIV, STD and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Patrick S. Sullivan

Affiliation Division of HIV/AIDS Prevention, National Center for HIV, STD and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

for the Post Marketing Surveillance Team

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PS LW DM SE. Performed the experiments: LW DM SE SO. Analyzed the data: LW JZ. Wrote the paper: PS LW DM SE JZ SO. Other: Lead investigator and coordinator of all study sites: LW.