Study of oligoclonal bands restricted to the cerebrospinal fluid in multiple sclerosis patients in the city of São Paulo - Gama, Paulo Diniz da; Machado, Luís dos Ramos; Livramento, José Antonio; Gomes, Hélio Rodrigues; Adoni, Tarso; Lino, Angelina Maria Martins; Marchiori, Paulo Eurípedes; Morales, Rogério de Rizo; Lana-Peixoto, Marco Aurélio; Callegaro, Dagoberto (Arquivos de Neuro-Psiquiatria, 2009)