About the Authors

Maria Lucia F. Penna

mlfpenna@id.uff.br

Affiliation Epidemiology Department, Instituto de Saúde da Comunidade, Universidade Federal Fluminense, Niteroi, Rio de Janeiro, Brasil

Gerson O. Penna

Affiliation Universidade de Brasília, Brasília, DF, Brasil

Paula C. Iglesias

Affiliation Epidemiology Department, Instituto de Saúde da Comunidade, Universidade Federal Fluminense, Niteroi, Rio de Janeiro, Brasil

Sonia Natal

Affiliation Universidade Federal de Santa Catarina, Florianópolis, SC, Brasil

Laura C. Rodrigues

Affiliation Department of Infectious Disease Epidemiology, London School of Hygiene and Public Health, London, England

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MLFP GOP LCR. Performed the experiments: MLFP PCI SN. Analyzed the data: MLFP LCR. Wrote the paper: MLFP LCR GOP PCI SN.