1. Division of General Neurology and Ataxia Unit, Department of Neurology, Universidade Federal de São Paulo, Sao Paulo, Sao Paulo, Brazil
2. Department of Neurology, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
3. Department of Neurology, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brazil
4. Department of Neurology, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil
5. Gardner Neuroscience Institute, Gardner Center for Parkinson's Disease and Movement Disorders, University of Cincinnati, Cincinnati, Ohio