@article{warren_1987,  title={Schistosomiasis: past, present and future},  volume={82},  ISSN={0074-0276},  url={https://doi.org/10.1590/S0074-02761987000800006},  DOI={10.1590/S0074-02761987000800006},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={Warren, Kenneth S.},  year={1987},  pages={25–29} }