Symptom extraction issue Laure Martin author Delphine Battistelli author Thierry Charnois author 2014-06 text Proceedings of BioNLP 2014 Kevin Cohen editor Dina Demner-Fushman editor Sophia Ananiadou editor Jun-ichi Tsujii editor Association for Computational Linguistics Baltimore, Maryland conference publication martin-etal-2014-symptom 10.3115/v1/W14-3416 https://aclanthology.org/W14-3416/ 2014-06 107 111