1. Department of Clinical Biochemistry (C.L.H., A.T.-H., A.A.Q., J.S., R.F.-S.), Rigshospitalet, DK-2100 Copenhagen, Denmark
2. The Copenhagen City Heart Study (A.T.-H., B.G.N.), Bispebjerg Hospital, DK-2100 Copenhagen, Denmark
3. Department of Clinical Biochemistry (B.G.N.), DK-2100 Copenhagen, Denmark
4. The Copenhagen General Population Study (A.T.-H., B.G.N., R.F.-S.), Herlev Hospital, Copenhagen University Hospitals and Faculty of Health Sciences, University of Copenhagen, DK-2100 Copenhagen, Denmark