1. Norwegian Institute of Public Health, Oslo, Norway
2. University of Oslo, Oslo, Norway
3. Statistics Norway, Research Department, Oslo, Norway
4. University of Bergen, Bergen, Norway
5. Norwegian Organization for Quality Improvement of Laboratory Examinations, Bergen, Norway
6. Mailman School of Public Health, Columbia University, New York, New York
7. Norwegian National Advisory Unit on Aging and Health, Vestfold Hospital Trust, Tønsberg, Norway
8. Oslo University Hospital, Oslo, Norway
9. Department of Health Metrics Sciences and Institute for Health Metrics and Evaluation, University of Washington, Seattle