1. Epidemiology Branch, and
2. Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Research Triangle Park, North Carolina, USA
3. Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
4. Population Health Branch, NIEHS, NIH, DHHS, Research Triangle Park, North Carolina, USA
5. Department of Chronic Diseases, and
6. Department of Management and Staff, Norwegian Institute of Public Health, Oslo, Norway
7. Department of Clinical Science, University of Bergen, Bergen, Norway
8. Laboratory of Clinical Biochemistry, Haukeland University Hospital, Bergen, Norway
9. Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
10. Center for Clinical Research, Haukeland University Hospital, Bergen, Norway
11. Bevital A/S, Bergen, Norway
12. Center for Disease Burden, Norwegian Institute of Public Health, Oslo/Bergen, Norway