@article{oselka_2003,  title={Prevenção da doença pneumocócica no Brasil},  volume={79},  ISSN={0021-7557},  url={https://doi.org/10.1590/S0021-75572003000300001},  DOI={10.1590/S0021-75572003000300001},  number={3},  journal={Jornal de Pediatria},  publisher={Sociedade Brasileira de Pediatria},  author={Oselka, Gabriel},  year={2003},  month={May},  pages={195–196} }