Annette Erlangsen1, Merete Nordentoft2. 1. Danish Research Institute for Suicide Prevention, Mental Health Centre Copenhagen, Copenhagen, Denmark; Copenhagen Research Center for Mental Health, Mental Health Centre Copenhagen, Copenhagen, Denmark; Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA; Center of Mental Health Research, Australian National University, Canberra, ACT, Australia. Electronic address: annette.erlangsen@regionh.dk. 2. Danish Research Institute for Suicide Prevention, Mental Health Centre Copenhagen, Copenhagen, Denmark; Copenhagen Research Center for Mental Health, Mental Health Centre Copenhagen, Copenhagen, Denmark; Institute of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark.