1. Department of Nephrology and Endocrinology P (J.S.J., B.F.-R., K.S.J.), The National University Hospital, DK-2100 Copenhagen, Denmark
2. The Copenhagen City Heart Study (J.S.J., B.G.N.), Bispebjerg University Hospital, DK-2400 Copenhagen, Denmark
3. Steno Diabetes Center (K.B.-J.), DK-2820 Gentofte, Denmark
4. Department of Clinical Biochemistry (B.G.N.), Herlev University Hospital, DK-2730 Herlev, Denmark