1. From the Departments of Cardiology (L.S.) and Neurology (H.K.I.) Rigshospitalet, University of Copenhagen, Copenhagen, and the Departments of Neurology (G.A.) and Cardiology (J.E.N.-K.) and the Faculty of Health (G.A.), Aarhus University, Aarhus — both in Denmark; the Department of Neurology, University of Pennsylvania, Philadelphia (S.E.K.); the Department of Cardiology, Nicklaus Children’s Hospital, Miami (J.F.R.); Heart and Vascular Theme (M.S.) and Department of Neurology (C.S.), Karolinska...