About the Authors

Francisco Rogerlândio Martins-Melo

Affiliation Department of Community Health, School of Medicine, Federal University of Ceará, Fortaleza, Brazil

Carlos Henrique Alencar

Affiliation Department of Community Health, School of Medicine, Federal University of Ceará, Fortaleza, Brazil

Alberto Novaes Ramos Jr.

Affiliation Department of Community Health, School of Medicine, Federal University of Ceará, Fortaleza, Brazil

Jorg Heukelbach

heukelbach@web.de

Affiliations Department of Community Health, School of Medicine, Federal University of Ceará, Fortaleza, Brazil, School of Public Health, Tropical Medicine and Rehabilitation Sciences, Anton Breinl Centre for Public Health and Tropical Medicine, James Cook University, Townsville, Australia

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: FRM-M JH CHA ANR. Performed the experiments: FRM-M JH CHA ANR. Analyzed the data: FRM-M JH CHA ANR. Contributed reagents/materials/analysis tools: FRM-M JH CHA ANR. Wrote the paper: FRM-M JH CHA ANR.