1. 1Department of Clinical ScienceUniversity of Bergen, Bergen, Norway
2. 2Department of Medicine
3. 3Department of the Hormone LaboratoryHaukeland University Hospital, Bergen, Norway
4. 4Department of EndocrinologySt. Olav’s Hospital, Trondheim, Norway
5. 5Department of Public Health and General PracticeNorwegian University of Science and Technology, Trondheim, Norway
6. 6Department of EndocrinologyAkershus University Hospital, Lørenskog, Norway