1. Department of Endocrinology (T.U., J.B.), National University Hospital, N-0027 Oslo, Norway;
2. Medical Research Laboratory M (A.F.), Aarhus University Hospital, DK-8000 Aarhus, Denmark;
3. Department of Endocrinology (T.B.H.), Odense University Hospital, DK-5000 Odense, Denmark;
4. Department of Internal Medicine and Endocrinology (N.V.), Aarhus Kommunehospital, DK-8000 Aarhus, Denmark;
5. Department of Cell Biology (L.M.), University of Aarhus, DK-8000 Aarhus, Denmark