1. Center for Endocrinology and Metabolism, Department Internal Medicine, Herlev and Gentofte Hospitals, Herlev, Denmark.
2. The Research Unit for General Practice and Section of General Practice, Department of Public Health, University of Copenhagen, Copenhagen, Denmark.
3. Department of Clinical Biochemistry, Amager Hvidovre Hospital, University of Copenhagen, Hvidovre, Denmark.
4. Department of Hematology, Roskilde University Hospital, Roskilde, Denmark.
5. Department of Hematology, Rigshospitalet, Copenhagen, Denmark.