@InProceedings{khoo-chan-niu:2000:ACL,
  author    = {Christopher S. G. Khoo  and  Syin Chan  and  Yun Niu},
  title     = {Extracting Causal Knowledge from a Medical Database Using Graphical Patterns},
  booktitle = {Proceedings of the 38th Annual Meeting of the Association for Computational Linguistics},
  month     = {October},
  year      = {2000},
  address   = {Hong Kong},
  publisher = {Association for Computational Linguistics},
  pages     = {336--343},
  url       = {http://www.aclweb.org/anthology/P00-1043},
  doi       = {10.3115/1075218.1075261}
}