1 Pain Center, Department of Neurology, University of São Paulo, São Paulo, Brazil
2 Pain Center, Instituto do Câncer de São Paulo, São Paulo, Brazil
3 Service of Interdisciplinary Neuromodulation (SIN), Department and Institute of Psychiatry, University of São Paulo, São Paulo, Brazil
4 Functional Electrostimulation Laboratory, Federal University of Bahia, São Paulo, Brazil
5 Centro de Dor, Instituto de Ortopedia e Traumatologia, University of São Paulo, São Paulo, Brazil
6 Divisão de ClÃnica Neurocirúrgica do Hospital das ClÃnicas da FMUSP, Secretaria da Neurologia, Instituto Central, Av. Dr. Enéas de Carvalho Aguiar, 255, 5° andar, sala 5084 – Cerqueira César, São Paulo, 05403-900, SP, Brazil