1. the Department of Clinical Biochemistry (B.A.-L., B.G.N., A.T.-H.), Herlev University Hospital; the Copenhagen City Heart Study (B.G.N., G.J., A.T.-H.), Department of Medicine B (R.S.), Division of Cardiology, and Department of Clinical Biochemistry (A.T.-H.), Rigshospitalet, National University Hospital; and Danish Epidemiology Science Centre at the Institute of Preventive Medicine (T.I.A.S.), University of Copenhagen, Denmark.