About the Authors

Carmen-Silvia Bruniera Domingues

Affiliations São Paulo State Program for STDs and AIDS, São Paulo State Department of Health STD and AIDS Referral and Training Center, São Paulo, Brazil, Department of Epidemiology, University of São Paulo School of Public Health, São Paulo, Brazil

Eliseu Alves Waldman

eawaldma@usp.br

Affiliation Department of Epidemiology, University of São Paulo School of Public Health, São Paulo, Brazil

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CSBD EAW. Performed the experiments: CSBD. Analyzed the data: CSBD. Contributed reagents/materials/analysis tools: CSBD EAW. Wrote the paper: CSBD EAW.