High prevalence of dementia among older adults from poor socioeconomic backgrounds in São Paulo, Brazil - Scazufca, Marcia; Menezes, Paulo R.; Crepaldi, André L.; Pastor-Valero, Maria; Coutinho, Letícia M. S.; Di Renzo, Vanessa D.; Almeida, Osvaldo P. (International Psychogeriatrics, 2008)