1. Departments of Endocrinology and Metabolism (M.T., F.B., L.H., T.H.B.), Odense C, Denmark
2. The Danish Aging Research Center and The Danish Twin Registry (D.A., K.C.), University of Southern Denmark, Odense C, 5000 Denmark
3. Clinical Genetics (K.C.), Odense C, Denmark
4. Clinical Biochemistry and Pharmacology (K.C.), Odense University Hospital, Odense C, Denmark