@article{guderian_shelley_1992,  title={Onchocerciasis in Ecuador: the situation in 1989},  volume={87},  ISSN={0074-0276},  url={https://doi.org/10.1590/S0074-02761992000300011},  DOI={10.1590/S0074-02761992000300011},  number={3},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={Guderian, Ronald H. and Shelley, Anthony J.},  year={1992},  month={Jul},  pages={405–415} }