1. Research Unit of Clinical Medicine, Department of Psychiatry, University of Oulu, Oulu, Finland.
2. Department of Psychiatry, Oulu University Hospital, Oulu, Finland.
3. Medical Research Centre Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland.
4. Research Unit of Health Sciences and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland.
5. Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland.
6. Faculty of Medicine, University of Oulu, Oulu, Finland.
7. Department of Obstetrics and Gynecology, Oulu University Hospital and MRC Oulu University, Oulu, Finland.