About the Authors

Laura G. Wesolowski

lig7@cdc.gov

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

Kevin P. Delaney

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

Margaret A. Lampe

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

Steven R. Nesheim

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

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LGW KPD MAL SRN. Performed the experiments: LGW KPD. Analyzed the data: LGW KPD. Contributed reagents/materials/analysis tools: LGW KPD. Wrote the paper: LGW KPD MAL SRN. Evaluation of coding and consultation with experts regarding ICD9 coding for pregnancy: MAL SRN LGW KPD.