@article{silva_2008,  title={Methodological procedures and ethical decisions},  volume={13},  ISSN={1413-8123},  url={https://doi.org/10.1590/S1413-81232008000200007},  DOI={10.1590/S1413-81232008000200007},  number={2},  journal={Ciência & Saúde Coletiva},  publisher={ABRASCO - Associação Brasileira de Saúde Coletiva},  author={Silva, Franklin Leopoldo e},  year={2008},  month={Mar},  pages={324–328} }