1. Department of Medical Biochemistry and Pharmacology Haukeland University Hospital Bergen, Norway
2. Departments of Clinical Blood Sciences and Cardiology St Georges University Hospitals NHS Foundation Trust and St George's University of London London, United Kingdom
3. Department of Clinical Chemistry Trondheim University Hospital Trondheim, Norway
4. Hormone Laboratory Haukeland University Hospital Bergen, Norway
5. Department of Clinical Science University of Bergen, Bergen, Norway