1. From the Departments of Cardiology (W.K.L., C.A.V.), Pathology (H.W.M.N.), and Internal Medicine (C.E.H.), Free University Hospital, Amsterdam; Cardiovascular Research Institute Maastricht (CARIM) (W.T.H.), University of Maastricht; the Department of Cardiology (F.W.A.V.), University Hospital Sint Radboud, Nijmegen; and CLB (G.-J.W., C.E.H.), Sanquin Blood Supply Foundation, Amsterdam, The Netherlands.