1 Division of Child Neurology, Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, Sao Paulo, Brazil. Electronic address: jsamagalhaes@yahoo.com.br.
2 Division of Child Neurology, Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, Sao Paulo, Brazil. Electronic address: ellensiqueira_17@yahoo.com.br.
3 Division of Child Neurology, Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, Sao Paulo, Brazil.