1. Aziena Ospedaliero-Universitaria "Maggiore della Carità"; SCDU Neurologia; C Mazzini 18 28100 Novara Italy
2. University of Piemonte Orientale "A. Avogadro"; Department of Clinical and Experimental Medicine; via Solaroli 17 Novara Italy 28100
3. University of Piemonte Orientale "A. Avogadro"; Department of Medical Sciences; via Solaroli 17 Novara Italy 28100
4. University of Turin; School of Public Health; via Santena 5bis Turin Italy 10126