1. Department of Behavioural Sciences in Medicine; Institute of Basic Medical Sciences; University of Oslo; Oslo Norway
2. Department of Haematology; Oslo University Hospital and University of Oslo; Oslo Norway
3. Department of Obstetrics and Gynaecology; Oslo University Hospital; Oslo Norway
4. Sophiahemmet University; Stockholm Sweden
5. Oslo Centre for Biostatistics and Epidemiology, Research Support Services; Oslo University Hospital and University of Oslo; Oslo Norway
6. Division of Mental Health and Addiction; Oslo University Hospital; Oslo Norway