1. Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark;
2. Medical Research Laboratory, Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark;
3. Endocrine Research Unit, Department of Endocrinology, Odense University Hospital, Odense, Denmark;
4. Department of Clinical Research, Faculty of Health, University of Southern Denmark, Odense, Denmark;
5. Department of Respiratory Diseases and Allergy, Aarhus University Hospital, Aarhus, Denmark;
6. Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark