1. Department of Neurology University of California, San Francisco San Francisco CA USA
2. Hospital Albert Einstein São Paulo Brazil
3. Department of Pathology, LIM-22 University of São Paulo Medical School São Paulo Brazil
4. Division of Geriatrics University of Sao Paulo Medical School São Paulo Brazil
5. University of São Paulo, School of Nursing São Paulo Brazil
6. Department of Neurology University of Sao Paulo Medical School São Paulo Brazil
7. University of Frankfurt Frankfurt Germany
8. Department of Biostatistics University of California San Francisco CA USA
9. University of Wuerzburg Wuerzburg Germany