1. Department of Internal Medicine; Faculty of Medicine of Jundiaí; Jundiaí São Paulo Brazil
2. Division of Geriatrics; Department of Internal Medicine; Faculty of Medicine; University of São Paulo; São Paulo Brazil
3. Department of Statistics; Federal University of São Carlos; São Carlos Brazil
4. Department of Neurology; Faculty of Medicine; University of São Paulo; São Paulo Brazil
5. School of Arts, Sciences and Humanities; University of São Paulo; São Paulo Brazil