1. ‘Salvatore Maugeri’ Foundation IRCCS; Medical Center of Telese Terme (BN); Telese Terme Italy
2. Interuniversity Centre for Pain Neurophysiology; University of Genoa; Genoa Italy
3. Department of Neurological Sciences; ‘La Sapienza’ University; Rome Italy
4. Department of Neurological Sciences; University of Naples ‘Federico II’; Naples Italy