1. From the Departments of Cardiology (Martial Hamon), Neurology (F.V.), and Radiology (Michèle Hamon), University Hospital of Caen, Caen, France; Department of Clinical Neurosciences (J.-C.B.), University of Cambridge, Cambridge, UK; and Inserm 744, Institut Pasteur de Lille (Martial Hamon, Michèle Hamon), Lille, France.