1. Faculty of Medicine, Department of Psychiatry University of Turku Turku Finland
2. Addiction Psychiatry Unit, Department of Psychiatry Turku University Hospital Turku Finland
3. Faculty of Medicine and Health Technology Tampere University Tampere Finland
4. Department of Psychiatry Seinäjoki Central Hospital Seinäjoki Finland
5. Medical Research Center Oulu Oulu University Hospital and University of Oulu Oulu Finland
6. QIMR Berghofer Medical Research Institute Herston Qld Australia
7. Metro North Mental Health Service Herston Qld Australia
8. Institute of Mental Health University of Nottingham Nottingham UK
9. Nottinghamshire Healthcare Trust Nottingham UK
10. Center for Life Course Health Research University of Oulu Oulu Finland