Progressive multifocal leukoencephalopathy and spectrum of predisposing conditions: a 20-year retrospective cohort study in a tertiary center in São Paulo, Brazil - Mari, Julia Ferreira; Miranda, Érique Jose Farias Peixoto de; Correa, Maria Cássia Jacintho Mendes; Chow, Felicia C; Vidal, Jose Ernesto (Neurological sciences, 2025)