European psychiatry, 59, 52-59. Elsevier Masson EU-GEI High Risk Study Group 2019, ' Gender differences of patients at-risk for psychosis regarding symptomatology, drug use, comorbidity and functioning – Results from the EU-GEI study ', European Psychiatry, vol. 59, pp. 52-59 . https://doi.org/10.1016/j.eurpsy.2019.04.007 2019, ' Gender differences of patients at-risk for psychosis regarding symptomatology, drug use, comorbidity and functioning : Results from the EU-GEI study ', European Psychiatry, vol. 59, pp. 52-59 . https://doi.org/10.1016/j.eurpsy.2019.04.007 European Psychiatry, 59, 52. Elsevier Masson European Psychiatry, 59, 52-59. Elsevier France-Éditions Scientifiques et Medicales Elsevier European Psychiatry, 59, 52-59. Elsevier Masson