1. Departments of Clinical Biochemistry (P.H.N., L.H.), Aarhus University Hospital, Aarhus Sygehus, DK-8000 Aarhus C, Denmark
2. Departments of Endocrinology and Metabolism (S.E.C., L.M.), Aarhus University Hospital, Aarhus Sygehus, DK-8000 Aarhus C, Denmark
3. Department of Endocrinology (K.B.), Odense University Hospital, DK-5000 Odense, Denmark