Answering Clinical Questions with Knowledge-Based and Statistical Techniques Dina Demner-Fushman author Jimmy Lin author 2007 text journal article Computational Linguistics continuing periodical academic journal demner-fushman-lin-2007-answering 10.1162/coli.2007.33.1.63 https://aclanthology.org/J07-1005/ 2007 33 1 63 103