1. Department of Mental DisordersNorwegian Institute of Public HealthOslo Norway
2. Centre for Fertility and Health, Norwegian Institute of Public HealthOslo Norway
3. Department of PsychologyUniversity of Oslo Norway
4. PharmacoEpidemiology and Drug Safety Research Group, School of Pharmacy, University of Oslo Norway
5. Department of PsychiatryVirginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth UniversityRichmond Virginia
6. Department of Human and Molecular Genetics and Department of PsychiatryVirginia Commonwealth UniversityRichmond Virginia
7. Norwegian National Advisory Unit on Concurrent Substance Abuse and Mental Health DisordersBrumunddal Norway
8. Institute of Clinical Medicine, UiT ‐ The Arctic University of NorwayTromsø Norway
9. Institute of Clinical Medicine, University of OsloOslo Norway