1. Pain Center; Department of Neurology; University of São Paulo; São Paulo Brazil
2. Pain Center; Instituto do Câncer do Estado de São Paulo; São Paulo Brazil
3. Movement Disorders Group; Department of Neurology; University of São Paulo; São Paulo Brazil
4. Transcranial Magnetic Stimulation Laboratory; Psychiatry Institute; University of São Paulo; São Paulo Brazil
5. Neurosurgery Division; Department of Neurology; University of São Paulo; São Paulo Brazil
6. Laboratory of Clinical Pharmacology and Epidemiology; Catholic University; Buenos Aires Argentina