[1] Univ Estadual Paulista UNESP, Biosci Inst, BR-13506900 Rio Claro, SP, Brazil
[2] Univ Sao Paulo, Fac Med, Dept & Inst Psychiat, Lab Neurosci LIM 27, BR-05508 Sao Paulo, Brazil
[3] Univ Fed Rio de Janeiro, Inst Psychiat, Ctr Alzheimers Dis & Related Disorders, BR-21941 Rio De Janeiro, RJ, Brazil
[4] Univ Estadual Campinas, Fac Med, Clin Geriatr Psychiat, Campinas, SP, Brazil
[5] FAMERP Fac Med, Geriatr Unity, Sao Jose Do Rio Preto, Brazil
[6] Johns Hopkins Univ, Dept Psychiat, Johns Hopkins Bayview, Baltimore, MD USA
[7] Miami Univ, Dept Sociol & Gerontol, Oxford, OH 45056 USA