A preliminary study on automatic identification of patient smoking status in unstructured electronic health records Jitendra Jonnagaddala author Hong-Jie Dai author Pradeep Ray author Siaw-Teng Liaw author 2015-07 text Proceedings of BioNLP 15 Kevin Bretonnel Cohen editor Dina Demner-Fushman editor Sophia Ananiadou editor Jun-ichi Tsujii editor Association for Computational Linguistics Beijing, China conference publication jonnagaddala-etal-2015-preliminary 10.18653/v1/W15-3818 https://aclanthology.org/W15-3818/ 2015-07 147 151