1. Department of Neurology; First Faculty of Medicine; Charles University; Prague Czech Republic
2. Queen Mary University of London; Blizard Institute; London UK
3. St Josef Hospital; Ruhr University; Bochum Germany
4. Mellen Center for Multiple Sclerosis Treatment and Research; Cleveland Clinic; Cleveland OH USA
5. Neurologic Clinic and Policlinic; University Hospital; Basel Switzerland
6. Multiple Sclerosis Program; Baylor Institute for Immunology Research; Dallas TX USA
7. Biogen; Cambridge MA USA