1. Department of Pediatric Neurosciences Fondazione IRCCS Istituto Neurologico Carlo Besta Milano Italy
2. Rare Neurological Diseases Unit, Department of Clinical Neurosciences Fondazione IRCCS Istituto Neurologico Carlo Besta Milano Italy
3. Department of Neurology Azienda Ospedaliera Universitaria “San Giovanni di Dio e Ruggi d'Aragona” Salerno Italy
4. Department of Neurology University of Iowa Hospitals and Clinics Iowa City USA
5. Department of Neurology Wayne State University Detroit Michigan USA
6. Department of Biostatistics and Computational Biology University of Rochester Rochester New York USA