@inproceedings{khoo-etal-2000-extracting,
    title = "Extracting Causal Knowledge from a Medical Database Using Graphical Patterns",
    author = "Khoo, Christopher S. G.  and
      Chan, Syin  and
      Niu, Yun",
    booktitle = "Proceedings of the 38th Annual Meeting of the Association for Computational Linguistics",
    month = oct,
    year = "2000",
    address = "Hong Kong",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/P00-1043/",
    doi = "10.3115/1075218.1075261",
    pages = "336--343"
}