1. a State Department of Health , Praia de Iracema , Fortaleza , Brasil
2. b Department of Community Health , Medical School, Federal University of Ceará , Fortaleza , Brasil
3. c School of Medicine, Physiotherapy Course , Federal University of Ceará , Fortaleza , Brasil
4. d Department of Statistics and Applied Mathematics, Center for Sciences , Federal University of Ceará , Fortaleza , Brasil
5. e Department of Global Health and Behavioral Science , Tulane University School of Public Health and Tropical Medicine , New Orleans , LA , USA