@article{lyra_damasceno_cotrim_mota_silva_1986,  title={Prevalence of antibody to hepatitis B virus in an urban population of northeast Brazil},  volume={28},  ISSN={0036-4665},  url={https://doi.org/10.1590/S0036-46651986000600005},  DOI={10.1590/S0036-46651986000600005},  number={6},  journal={Revista do Instituto de Medicina Tropical de São Paulo},  publisher={Instituto de Medicina Tropical de São Paulo},  author={Lyra, L. G. and Damasceno, A. P. and Cotrim, P. and Mota, E. and Silva, L.},  year={1986},  month={Nov},  pages={406–409} }