1. Universidade Federal de São Paulo; Department of Psychiatry; Rua Borges Lagoa, 570 São Paulo Sao Paulo Brazil 04038-030
2. Universidade do Estado do Pará; Department of Public Health; Travessa Perebebuí, 2623 Belém Pará Brazil 66087-670
3. London School of Hygiene and Tropical Medicine; Department of Population Studies; Room 150, Keppel Street, London England UK WC1E 7HT
4. Universidade Federal de São Paulo; Department of Speech-Language and Hearing Pathology; Rua Botucatu, 802 São Paulo São Paulo Brazil 04023-900