1. From the Hematological Research Group (S.K.B., E.M.H., J.-B.H.), Department of Clinical Medicine, University of Tromsø, Tromsø, Norway; Division of Internal Medicine (E.M.H., J.-B.H.), University Hospital of North Norway, Tromsø, Norway; Brain and Circulation Research Group (E.B.M.), Department of Clinical Medicine, University of Tromsø, Tromsø, Norway; Department of Neurology and Clinical Neurophysiology (E.B.M.), University Hospital of North Norway, Tromsø, Norway; Department of Community Medicine...