1. Clinical Neuroimmunology and Neurochemistry, Department of Neurology, Hannover Medical School, Hannover, Germany
2. Department of Pediatric Pneumology and Neonatology, Hannover Medical School, Hannover, Germany
3. Neurology Section, VA North Texas Health Care System, Medical Service Dallas, VA Medical Center, Dallas4Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas
4. Department of Neurology, University of Münster, Münster, Germany