Cysticercosis of the central nervous system: I. Surgical treatment of cerebral cysticercosis. A 23 years experience in the hospital das clínicas of Ribeirão Preto Medical School - Benedicto Oscar Colli; Nelson Martelli; João Alberto Assirati Jr; Hélio Rubens Machado; Cármine Porcelli Salvarani; Valéria Paula Sassoli; Sylvio de Vergueiro Forjaz (Arquivos de Neuro-Psiquiatria)