1. Department of Neurosurgery, San Martino - IST University Hospital (IRCCS), Genoa;
2. Department of Neuroscience, University of Turin, Italy
3. Department of Pediatric Neurosurgery, Istituto Giannina Gaslini, Genoa;
4. Department of Neurosurgery, ICCS Hospital, Milan;
5. University of Genoa; and