1. Department of Neurosurgery, LINT, Facultad de Medicina, Universidad Nacional de Tucumán,
2. Department of Neurological Surgery, Hospital Padilla, Tucumán, Argentina
3. Department of Neurological Surgery, Hospital San Fernando, Argentina
4. Laboratory of Microsurgical Neuroanatomy, Second Chair of Gross Anatomy, School of Medicine, University of Buenos Aires, Buenos Aires, Argentina,
5. Department of Neurosurgery, Medical University of South Carolina, Charleston, South Carolina, USA,
6. Neurosurgery Unit, Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Italy.
7. Neurosurgery Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.