title: [The author replies] [In Process Citation]
authors.affiliation: Departamento de Epidemiologia e Metodos Quantitativos em Saude, Escola Nacional de Saude Publica, Fundacao Oswaldo Cruz, Rio de Janeiro, RJ, 21041-210, Brasil.
authors.initials: D
authors.lastname: Czeresnia
authors.initials: AM
authors.lastname: Ribeiro