@article{heller_1998,  title={Environmental determinants of infectious and parasitic diseases},  volume={93},  ISSN={0074-0276},  url={https://doi.org/10.1590/S0074-02761998000700002},  DOI={10.1590/S0074-02761998000700002},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={Heller, Léo},  year={1998},  pages={07–12} }