CLaC at SMM4H 2020: Birth Defect Mention Detection Parsa Bagherzadeh author Sabine Bergler author 2020-12 text Proceedings of the Fifth Social Media Mining for Health Applications Workshop & Shared Task Graciela Gonzalez-Hernandez editor Ari Z Klein editor Ivan Flores editor Davy Weissenbacher editor Arjun Magge editor Karen O’Connor editor Abeed Sarker editor Anne-Lyse Minard editor Elena Tutubalina editor Zulfat Miftahutdinov editor Ilseyar Alimova editor Association for Computational Linguistics Barcelona, Spain (Online) conference publication bagherzadeh-bergler-2020-clac https://aclanthology.org/2020.smm4h-1.32/ 2020-12 168 170