1. Department of Global Health and Population, Harvard T. H. Chan School of Public Health, 677 Huntington Ave, Boston, MA 02115, USA
2. Department of Community Health, Federal University of Ceará, Rua Professor Costa Mendes, 1608, 5° andar, Fortaleza, Ceará CEP: 60430-140, Brazil
3. Own Resources Department, Unimed Fortaleza, 949 Santos Dumont Av., Fortaleza, Ceará 60150-160, Brazil
4. Public Health Department, Universidade de Fortaleza, 1321 Washington Soares Av., Fortaleza, CE 60811-905, Brazil