Authors: O V Forlenza; A H Filho; J P Nobrega; L dos Ramos Machado; N G de Barros; C H de Camargo; M F da Silva Journal: J Neurol Neurosurg Psychiatry Date: 1997-06 Impact factor: 10.154
Authors: H H Garcia; M Martinez; R Gilman; G Herrera; V C Tsang; J B Pilcher; F Diaz; M Verastegui; C Gallo; M Porras Journal: Lancet Date: 1991-08-31 Impact factor: 79.321