affiliation not provided to SSRN, University of Oslo - Oslo University Hospital, University of Oslo - Division of Mental Health and Addiction, University of Oslo - Division of Mental Health and Addiction, University of Oslo - Division of Mental Health and Addiction, University of Oslo - Division of Mental Health and Addiction, University of Oslo - Division of Mental Health and Addiction, Østfold Hospital, University of Oslo - Division of Mental Health and Addiction, University of Oslo - Division of Mental Health and Addiction, University of Oslo - Division of Mental Health and Addiction, University of Oslo - Oslo University Hospital, University of Oslo - Oslo University Hospital, University of Oslo - NORMENT, University of Oslo - Division of Mental Health and Addiction and University of Oslo - Division of Mental Health and Addiction