Rong Xu Yael Garten Kaustubh S. Supekar Amar K. Das Russ B. Altman Alan M. Garber Extracting Subject Demographic Information From Abstracts of Randomized Clinical Trial Reports. 550-554 2007 MedInfo http://dx.doi.org/10.3233/978-1-58603-774-1-550 conf/medinfo/2007 db/conf/medinfo/medinfo2007.html#XuGSDAG07