1. Rush University Medical Center, Department of Neurosurgery, Chicago, Illinois;
2. Barrow Neurological Institute, Neurological Surgery, Phoenix, Arizona;
3. Centro de Ciências da Saúde, Faculdade de Medicina, Chefe do Serviço de Neurocirurgia do HUAP/UFF, Niteroi, Rio de Janeiro, Brazil; and
4. Gui de Chauliac, CHU de Montpellier, Neurosurgery, Montpellier, France