1. Institute of Regional Health Research, University of Southern Denmark, Odense, Denmark
2. Research Unit, Department of Child and Adolescent Mental Health Odense, University Hospital, Odense, Denmark
3. Centre for Integrated Register-based Research, National Centre for Register-based Research, Business and Social Sciences, Aarhus University, Aarhus, Denmark
4. Centre for Suicide Prevention, Department of Child and Adolescent Mental Health Odense, University of Southern Denmark, Odense, Denmark
5. Department of Psychiatry, Odense and Institute of Regional Health Research, University of Southern Denmark, Odense, Denmark