1. Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark
2. Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
3. Department of Medicine, Sydvestjysk Sygehus, Esbjerg, Denmark
4. Department of Internal Medicine, Copenhagen University Hospital, Herlev, Denmark
5. Department of Endocrinology, Aalborg University Hospital, Aalborg, Denmark
6. Department of Endocrinology, Odense University Hospital, Odense, Denmark
7. Department of Endocrinology, National University Hospital Rigshospitalet, Copenhagen, Denmark
8. Department of Clinical Epidemiolgy and Metabolism, Leiden University Medical Centre, Leiden, The Netherlands