@inproceedings{Niu:2006:AMIA,
<br>&nbsp;&nbsp;&nbsp;&nbsp;  title = "Using Outcome Polarity in Sentence Extraction for Medical Question-Answering",
<br>&nbsp;&nbsp;&nbsp;&nbsp;  author = "Niu, Yun and Zhu, Xiaodan and Hirst, Graeme",
<br>&nbsp;&nbsp;&nbsp;&nbsp;  year = "2006",
<br>&nbsp;&nbsp;&nbsp;&nbsp;  booktitle = "Proceedings of the Annual Symposium of the American Medical Informatics Association",
<br>&nbsp;&nbsp;&nbsp;&nbsp;  location = "Washington, D.C., USA"
<br>}