1. Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway.
2. Department of Chronic Diseases & Ageing, Centre of Fertility & Health, Norwegian Institute of Public Health, Oslo, Norway.
3. Department of Child Health and Development, Norwegian Institute of Public Health, Oslo, Norway.
4. Department of Mental Disorders, Norwegian Institute of Public Health, Oslo, Norway.
5. Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
6. Oslo Centre of Biostatistics and Epidemiology, Oslo University Hospital, Oslo, Norway.