1. Neurology Department University General Hospital of Elche Elche Spain
2. Department of Neurology Jessenius Faculty of Medicine, Comenius University Martin Slovakia
3. Neurology Department University Hospital La Princesa Madrid Spain
4. Department of Neurology Helsinki University Hospital and Department of Clinical Neurosciences (Neurology), University of Helsinki Helsinki Finland
5. Neurology Department University General Hospital of Heraklion Heraklion Greece
6. Unit of Neurology Florence Health Authority, S. M. Annunziata Hospital Florence Italy
7. Statistics, AbbVie Inc. North Chicago Illinois USA
8. Neuroscience, AbbVie Inc North Chicago Illinois USA