1. Center for Clinical Metabolic Research, Gentofte Hospital, University of Copenhagen , DK-2900 Hellerup , Denmark
2. Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen , DK-2200 Copenhagen N , Denmark
3. Department of Clinical Pharmacology, Copenhagen University Hospital—Bispebjerg and Frederiksberg , DK-2400 Copenhagen NV , Denmark
4. Clinical Research, Steno Diabetes Center Copenhagen , University of Copenhagen, DK-2730 Herlev , Denmark
5. Department of Clinical Biochemistry, Rigshospitalet, University of Copenhagen , DK-2100 Copenhagen , Denmark
6. Department of Clinical Biochemistry, Copenhagen University Hospital—Bispebjerg , DK-2400 Copenhagen , Denmark
7. Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen , DK-2200 Copenhagen , Denmark
8. Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen , DK-2200 Copenhagen , Denmark