1. From the Department of Clinical Biochemistry (A.V., B.G.N.) and The Copenhagen General Population Study (A.V., B.G.N.), Herlev and Gentofte Hospital, Copenhagen University Hospital, Denmark; Faculty of Health and Medical Sciences, University of Copenhagen, Denmark (A.V., B.G.N.); and The Copenhagen City Heart Study, Frederiksberg Hospital, Copenhagen University Hospital, Denmark (B.G.N.).