Affiliations: Clínica Marrone, Porto Alegre, Brazil | Department of Neurology, GHC – Grupo Hospitalar Conceição, Porto Alegre, Brazil
Note: [] Correspondence to: Carlo Domenico Marrone, Av. Túlio de Rose, 400 apto 501. CEP XXX, Porto Alegre – RS, Brazil. E-mail: enmg.marrone@terra.com.br