@article{cotrim_mota_leite_silva_lyra_1992,  title={A case-control study on the association of hepatitis B virus infection and hepatocellular carcinoma in Northeast Brazil},  volume={26},  ISSN={0034-8910},  url={https://doi.org/10.1590/S0034-89101992000500001},  DOI={10.1590/S0034-89101992000500001},  number={5},  journal={Revista de Saúde Pública},  publisher={Faculdade de Saúde Pública da Universidade de São Paulo},  author={Cotrim, Helma and Mota, Eduardo and Leite, Livia and Silva, Luciana and Lyra, Luiz},  year={1992},  month={Oct},  pages={301–305} }