1. Department of Neurology, Christian-Albrecht University of Kiel and University Medical Center Schleswig-Holstein , 24105 Kiel , Germany
2. Neuroimmunology, Institute of Clinical Chemistry, Christian-Albrecht University of Kiel and University Medical Center Schleswig-Holstein , 24105 Kiel , Germany
3. Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, Queen Square , London WC1N 3BG , UK
4. Department of Neurology, University Hospital Heidelberg , 69120 Heidelberg , Germany
5. Department of Neurology, Charité University Medicine Berlin , 10117 Berlin , Germany
6. Department of Neurology, Klinikum Westfalen , 44309 Dortmund , Germany
7. Department of Neurology, St Josef Hospital, Ruhr University Bochum , 44791 Bochum , Germany
8. Oxford Autoimmune Neurology Group, Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital , Oxford OX3 9DU , UK
9. Department of Neurology, Erasmus MC University Medical Center , 3015 GD Rotterdam , The Netherlands
10. Centre National de Référence pour les Syndromes Neurologiques Paranéoplasiques, Hospices Civils de Lyon, Hôpital Neurologique , 69677 Bron , France
11. Institut NeuroMyoGene INSERM U1217/CNRS UMR 5310, Université de Lyon–Université Claude Bernard Lyon 1 , Lyon , France
12. August Pi i Sunyer Biomedical Research Institute (IDIBAPS); Service of Neurology, Hospital Clínic, University of Barcelona , 08036 Barcelona , Spain
13. Department of Neurology, University of Pennsylvania , Philadelphia, PA 19104 , USA
14. Catalan Institution for Research and Advanced Studies (ICREA) , 08010 Barcelona , Spain
15. Department of Neurology, University Hospitals Birmingham , Birmingham B15 2TH , UK
16. Department of Neurology with Institute of Translational Neurology, University of Münster , 48149 Münster , Germany
17. Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf , 40225 Düsseldorf , Germany
18. Department of Epileptology (Krankenhaus Mara), Bielefeld University, Medical School, Campus Bielefeld-Bethel , 33617 Bielefeld , Germany
19. Department of Neurology, University of Jena , 07747 Jena , Germany
20. Department of Neurology, Ulm University , 89081 Ulm , Germany
21. German Center for Neurodegenerative Diseases (DZNE) Berlin and Department of Neurology, Charité Universitätsmedizin Berlin , 10117 Berlin , Germany
22. Neuroimmunology, Institute of Clinical Chemistry, University Medical Center Schleswig-Holstein , 23538 Lübeck , Germany
23. Department of Neurology, University of Luebeck and University Medical Center Schleswig-Holstein , 23538 Lübeck , Germany