About the Authors

Magaly M. Blas

blasmag@u.washington.edu

Affiliations Unit of Epidemiology, HIV and STD, School of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru, NGO Via Libre, Lima, Peru, Department of Epidemiology, School of Public Health and Community Medicine, University of Washington, Seattle, Washington, United States of America

Isaac E. Alva

Affiliations Unit of Epidemiology, HIV and STD, School of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru, NGO Via Libre, Lima, Peru

Cesar P. Carcamo

Affiliation Unit of Epidemiology, HIV and STD, School of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru

Robinson Cabello

Affiliation NGO Via Libre, Lima, Peru

Steven M. Goodreau

Affiliation Department of Anthropology, University of Washington, Seattle, Washington, United States of America

Ann M. Kimball

Affiliation Department of Epidemiology, School of Public Health and Community Medicine, University of Washington, Seattle, Washington, United States of America

Ann E. Kurth

Affiliations Departments of Global Health, and of Epidemiology, School of Public Health and Community Medicine, University of Washington, Seattle, Washington, United States of America, School of Nursing, University of Washington, Seattle, Washington, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MMB IA. Performed the experiments: MMB IA RC. Analyzed the data: MMB IA CPC SMG AMK AK. Contributed reagents/materials/analysis tools: MMB IA CPC RC SMG AMK AK. Wrote the paper: MMB IA CPC RC SMG AMK AK.