Affiliation: | Author affiliations: Ministry of Health Brasília, Brasilia, Brazil (J.G. Temporão, G.O. Penna);;University of Brasília, Brasilia (G.O. Penna);;Secretariat of Health Surveillance, Brasilia (E.H. Carmo, G.E. Coelho);;Evandro Chagas Institute, Ananindeua, Brazil (R. do Socorro Silva Azevedo, M.R.T. Nunes, P.F. da Costa Vasconcelos) |