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 Department of Medical Biochemistry and Pharmacology Haukeland University Hospital Bergen, Norway kristin.moberg.aakre@helse-bergen.no.
5 Hormone Laboratory Haukeland University Hospital Bergen, Norway.
6 Department of Clinical Science University of Bergen, Bergen, Norway.