@article{doehring-schwerdtfeger_kardorff_1995,  title={Ultrasonography in Schistosomiasis in Africa},  volume={90},  ISSN={0074-0276},  url={https://doi.org/10.1590/S0074-02761995000200003},  DOI={10.1590/S0074-02761995000200003},  number={2},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={Doehring-Schwerdtfeger, Ekkehard and Kardorff, Ruediger},  year={1995},  month={Mar},  pages={141–145} }