@article{avila-pires_1995,  title={The use and mis-use of some ecological terms and concepts in epidemiology},  volume={90},  ISSN={0074-0276},  url={https://doi.org/10.1590/S0074-02761995000500003},  DOI={10.1590/S0074-02761995000500003},  number={5},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={Avila-Pires, Fernando D.},  year={1995},  month={Sep},  pages={561–564} }