1. From the Department of Clinical Biochemistry, Rigshospitalet (A.B.W., A.T.-H.), Department of Clinical Biochemistry, Herlev and Gentofte Hospital (B.G.N.), and Copenhagen City Heart Study, Frederiksberg Hospital (B.G.N., A.T.-H.), Copenhagen University Hospital, University of Copenhagen, Denmark; Department of Clinical Biochemistry, Zealand University Hospital, Denmark (A.B.W.); and Copenhagen General Population Study, Herlev and Gentofte Hospital, Denmark (B.G.N., A.T.-H.).