1. From the Departments of Clinical Biochemistry (M.B., A.T.-H.) and Clinical Genetics (M.S.), Rigshospitalet, Copenhagen University Hospital; Department of Clinical Biochemistry, Herlev University Hospital (B.G.N.); and the Copenhagen City Heart Study, Bispebjerg University Hospital (B.G.N., A.T.-H.); all Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark.