1. Department of Clinical Sciences in Lund Lund University Lund Sweden
2. Department of Global Public Health and Primary Care University of Bergen Bergen Norway
3. Cancer Registry of Norway Oslo Norway
4. Department of Surgical Sciences Uppsala University Uppsala Sweden
5. Division of Mental and Physical Health Norwegian Institute of Public Health Bergen Norway
6. Department of Public Health and Clinical Medicine Umeå University Umeå Sweden
7. Northern Register Centre, Department of Public Health and Clinical Medicine Umeå University Umeå Sweden