@article{figueiredo_szklo_szklo_benowitz_lozana_casado_masson_samet_2007,  title={Determinants of salivary cotinine level: a population-based study in Brazil},  volume={41},  ISSN={0034-8910},  url={https://doi.org/10.1590/S0034-89102006005000048},  DOI={10.1590/S0034-89102006005000048},  number={6},  journal={Revista de Saúde Pública},  publisher={Faculdade de Saúde Pública da Universidade de São Paulo},  author={Figueiredo, Valeska Carvalho and Szklo, Moyses and Szklo, André Salem and Benowitz, Neal and Lozana, José Azevedo and Casado, Leticia and Masson, Elaine and Samet, Jonathan},  year={2007},  month={Dec},  pages={954–962} }