Figueiredo Eberval G, Neto Hugo Sterman, Marchiori Paulo E, Rosemberg Sergio, Teixeira Manoel J
Division of Neurological Surgery, University of São Paulo, School of Medicine, Sao Paulo, Brazil.
Clin Neurol Neurosurg. 2012 Sep;114(7):1088-90. doi: 10.1016/j.clineuro.2012.02.013. Epub 2012 Mar 6.