@inproceedings{Niu:2003:NLBIO,
  author = {Niu, Yun  and  Hirst, Graeme  and  McArthur, Gregory  and  Rodriguez-Gianolli, Patricia},
  title  = {Answering Clinical Questions with Role Identification},
  booktitle = {Proceedings of the ACL 2003 Workshop on Natural Language Processing in Biomedicine},
  editor = {Sophia Ananiadou and Jun'ichi Tsujii},
  url    = {http://www.aclweb.org/anthology/W03-1310.pdf},
  year   = 2003,
  pages  = {73--80}
}