1. Institute of Neurology, Catholic University, L.go A. Gemelli 8, 00168 Rome
2. IRCCS E. MEDEA Associazione la Nostra Famiglia, Ostuni, Catholic University, Largo Agostino Gemelli 8, 00168 Rome
3. Institute of Neurosurgery, Catholic University, Largo Agostino Gemelli 8, 00168 Rome
4. IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
5. Sobell Department of Neurophysiology, Institute of Neurology, The National Hospital for Neurology and Neurosurgery, Queen Square, London WC1N 3BG, UK