1. From the Hematological Research Group (E.M.H., S.K.B.) and Brain and Circulation Research Group (E.B.M., S.H.J.), Department of Clinical Medicine and Department of Community Medicine (M.L.-L., I.N., T.W.), University of Tromsø, Tromsø, Norway; Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands (W.M.L., F.R.R., S.K.B.); and Department of Neurology and Neurophysiology (E.B.M., S.H.J.) and Division of Internal Medicine (E.M.H., J.-B.H), University Hospital...