Passive Diagnosis Incorporating the PHQ-4 for Depression and Anxiety Fionn Delahunty author Robert Johansson author Mihael Arcan author 2019-08 text Proceedings of the Fourth Social Media Mining for Health Applications (#SMM4H) Workshop & Shared Task Davy Weissenbacher editor Graciela Gonzalez-Hernandez editor Association for Computational Linguistics Florence, Italy conference publication delahunty-etal-2019-passive 10.18653/v1/W19-3205 https://aclanthology.org/W19-3205/ 2019-08 40 46