@article{herrero_1967,  title={The use of long acting sulfonamides, alone or with pyrimethamine, in malaria (with special reference to sulformetoxine)},  volume={1},  ISSN={0037-8682},  url={https://doi.org/10.1590/S0037-86821967000300004},  DOI={10.1590/S0037-86821967000300004},  number={3},  journal={Revista da Sociedade Brasileira de Medicina Tropical},  publisher={Sociedade Brasileira de Medicina Tropical - SBMT},  author={Herrero, J.},  year={1967},  month={May},  pages={103–136} }