1. Fondazione I.R.C.C.S. - Istituto Neurologico C. Besta; MS Group; Via Celoria, 11 Milano Italy 20133
2. University of Modena and Reggio Emilia; Department of Oncology and Hematology; Via del Pozzo 71 Modena Italy
3. The Jacobs Neurological Institute, State University of New York at Buffalo; Baird MS Center; 100 High Street Buffalo New York USA 14203