1. Department of Neurological Sciences (DNNMMS), University of Verona, Via Delle Grazie 8, 37134 Verona, Italy
2. Department of Neurology, Yaoundé Central Hospital, Rue Henri Dunant, P.O. Box 87, Yaoundé, Cameroon
3. Department of Health Sciences, Faculty of Science, University of Mauritius, Reduit 230, Mauritius