1. Cancer Registry of Norway Oslo Norway
2. Department of Medical Epidemiology and Biostatistics Karolinska Institutet Stockholm Sweden
3. Danish Cancer Society Research Center Danish Cancer Society Copenhagen Denmark
4. Center of Health Science Faculty of Health Sciences Tórshavn Faroe Islands
5. National Hospital of the Faroe Islands Tórshavn Faroe Islands
6. Department of Research and Innovation Møre and Romsdal Hospital Trust Ålesund Norway
7. National Board of Health and Welfare Stockholm Sweden
8. Cancer Registry of Iceland Icelandic Cancer Society Reykjavik Iceland
9. Finnish Cancer Registry Cancer Society of Finland Helsinki Finland
10. Health Sciences Unit Faculty of Social Sciences, Tampere University Tampere Finland
11. Department of Public Health, Faculty of Medicine University of Helsinki Helsinki Finland
12. Faculty of Medicine University of Iceland Reykjavik Iceland
13. Institute of Basic Medical Sciences University of Oslo Oslo Norway
14. Department of Preventive Medicine University of Southern California Los Angeles California USA
15. Regional Cancer Center Central Sweden Uppsala Sweden