Use of Natural Language Processing to identify Obsessive Compulsive Symptoms in patients with schizophrenia, schizoaffective disorder or bipolar disorder oleh David Chandran, Deborah Ahn Robbins, Chin-Kuo Chang, Hitesh Shetty, Jyoti Sanyal, Johnny Downs, Marcella Fok, Michael Ball, Richard Jackson, Robert Stewart, Hannah Cohen, Jentien M. Vermeulen, Frederike Schirmbeck, Lieuwe de Haan, Richard Hayes