1. Immunology Division, Postgraduate Medical School, University of Chieti-Pescara, Chieti, Italy
2. UOS Clinica dei Pazienti del Territorio, Policlinico Gemelli, Roma, Italy
3. Department of Pharmacology, University of Perugia, Perugia, Italy
4. Center of Intensive Rehabilitation, “S. Agnese”, Pineto (TE), Italy
5. Department of Neurology, Carver College of Medicine, University of Iowa, Iowa City, IA, USA