1. From the Departments of Neurology (H.M., D.K., M.E., P.M.) and Immunology (J.H.), Second Faculty of Medicine Charles University and Motol University Hospital, Prague, Czech Republic; Institute of Clinical Chemistry (J.D., K.-P.W., F.L.), University Hospital Schleswig-Holstein, Kiel/Lübeck; and Neuroimmunology (F.L.), Department of Neurology, University Hospital Schleswig-Holstein Kiel, Germany.