@article{pritchard_1997,  title={The pro-allergic influences of helminth parasites},  volume={92},  ISSN={0074-0276},  url={https://doi.org/10.1590/S0074-02761997000800004},  DOI={10.1590/S0074-02761997000800004},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={Pritchard, David I},  year={1997},  month={Dec},  pages={15–18} }