@article{bellei_carraro_castelo_granato_2006,  title={Risk factors for poor immune response to influenza vaccination in elderly people},  volume={10},  ISSN={1413-8670},  url={https://doi.org/10.1590/S1413-86702006000400011},  DOI={10.1590/S1413-86702006000400011},  number={4},  journal={Brazilian Journal of Infectious Diseases},  publisher={Brazilian Society of Infectious Diseases},  author={Bellei, N.C.J. and Carraro, E. and Castelo, A. and Granato, C.F.H.},  year={2006},  month={Aug},  pages={269–273} }