@article{oliveira_comácio_santos_2011,  title={Seroprevalence of hepatitis A immunity among brazilian adult patients with liver cirrhosis: is HAV vaccination necessary?},  volume={15},  ISSN={1413-8670},  url={https://doi.org/10.1590/S1413-86702011000300015},  DOI={10.1590/S1413-86702011000300015},  number={3},  journal={Brazilian Journal of Infectious Diseases},  publisher={Brazilian Society of Infectious Diseases},  author={Oliveira, Luiz Carlos Marques de and Comácio, Samantha Martins and Santos, Júlia de Fátima Gonçalves},  year={2011},  month={May},  pages={268–271} }