[1] Neurological Clinic I,
[2] Policlinico,undefined
[3] University of Bari,undefined
[4] Piazza Giulio Cesare 11,undefined
[5] I-70124,undefined
[6] Bari,undefined
[7] Italy,undefined
[8] e-mail: f.m.puca@neurol.uniba.it,undefined
[9] Tel.: +39-080-5592331,undefined
[10] Fax: +39-080-5478532,undefined