Affiliation: | 1.Hospital Do Servidor Público Estadual de S?o Paulo, S?o Paulo, Brazil ;2.Division of Neurosurgery, University Hospital Lauro Wanderley/UFPB, Jo?o Pessoa, Paraíba, Brazil ;3.School of Medical Sciences, Santa Casa de S?o Paulo, S?o Paulo, Brazil ;4.Department of Neurosurgery, UNICAMP, Campinas, S?o Paulo, Brazil ;5.Biocor Instituto, Belo Horizonte, Minas Gerais, Brazil ;6.Department of Neurosurgery, Federal University of S?o Paulo, S?o Paulo, Brazil ;7.Department of Neurosurgery, University of S?o Paulo, S?o Paulo, Brazil ;8.Universidade Cruzeiro Do Sul, S?o Paulo, Brazil ;9.Brazilian Neurosurgical Society’s Spine Department, Neurological Institute of Curiritba, Curitiba, Paraná, Brazil ; |