@inproceedings{christensen-haug-fiszman:2002:BIO,
  author    = {Christensen, Lee  and  Haug, Peter  and  Fiszman, Marcelo},
  title     = {MPLUS: a probabilistic medical language understanding system},
  booktitle = {Proceedings of the Workshop on Natural Language Processing in the Biomedical Domain},
  year      = 2002,
  month     = {July},
  address   = {Philadelphia},
  publisher = {Association for Computational Linguistics},
  pages     = {29--36}
}