@article{machado_costa_costa_rodrigues_2020,  title={Mucosal bacterial vaccines in clinical practice – a novel approach to an old problem?},  volume={66},  ISSN={0104-4230},  url={https://doi.org/10.1590/1806-9282.66.5.659},  DOI={10.1590/1806-9282.66.5.659},  number={5},  journal={Revista da Associação Médica Brasileira},  publisher={Associação Médica Brasileira},  author={Machado, João Neiva and Costa, José Coutinho and Costa, Teresa and Rodrigues, Cidália},  year={2020},  month={May},  pages={659–665} }