1. Department of Clinical Science, University of Bergen , PO Box 7804, Bergen 5020 , Norway
2. Department of Heart Disease, Haukeland University Hospital , Bergen , Norway
3. Clinic of Cardiology, St. Olavs University Hospital , Trondheim , Norway
4. Department of Circulation and Medical Imaging, Norwegian University of Science and Technology , Trondheim , Norway
5. Department of Internal Medicine, Levanger Hospital, Nord-Trøndelag Hospital Trust , Levanger , Norway
6. Department of Internal Medicine, Yale School of Medicine , New Haven, CT , USA
7. Department of Biostatistics, Yale School of Public Health , New Haven, CT , USA
8. Department of Public Health and Primary Care, University of Cambridge School of Clinical Medicine , Cambridge , UK
9. Cense Ltd. Dalla Lana School of Public Health, University of Toronto , Toronto, ON , Canada
10. Department of Cardiology, Copenhagen University Hospital, Rigshospitalet , Copenhagen , Denmark
11. Centre for Child and Adolescent Mental Health, Region East and South , Oslo , Norway
12. Norwegian Centre for Violence and Traumatic Stress Studies , Oslo , Norway
13. Centre for Clinical Research, Haukeland University Hospital , Bergen , Norway