| 1 (578) | St. Olavs University Hospital | NOR |  | |
| 2 (598) | Norwegian Institute of Public Health | NOR | | |
| 3 (604) | Copenhagen University Hospital | DNK | | |
| 4 (656) | Oslo University Hospital | NOR | | |
| 5 (692) | Karolinska University Hospital | SWE | | |
| 6 (711) | National Institute for Health and Welfare | FIN | | |
| 7 (715) | Finnish Institute Occupational Health | FIN | | |
| 8 (746) | Helsinki University Central Hospital | FIN | |
