1. From the Department of Clinical Biochemistry (R.F.-S., A.T.-H.), Rigshospitalet, Copenhagen University Hospital, University of Copenhagen; the Department of Clinical Biochemistry (B.G.N.), Herlev University Hospital, University of Copenhagen; the Copenhagen City Heart Study (B.G.N., G.B.J., A.T.-H.), Bispebjerg University Hospital, University of Copenhagen; and the Department of Medicine B (R.S.), Hillerød Hospital, Hillerød, Denmark.