1. Department of Neurology, General Neurology and Ataxia Unit; Universidade Federal de São Paulo; São Paulo Brazil
2. Department of Neurology; University of Campinas (Unicamp), Campinas; São Paulo Brazil
3. Department of Biochemistry Universidade Federal do Rio Grande do Sul; Porto Alegre Brazil
4. Medical Genetics Service, Hospital de Clínicas de Porto Alegre; Porto Alegre Brazil
5. Postgraduate Program in Medical Sciences; Universidade Federal do Rio Grande do Sul; Porto Alegre Brazil
6. Movement Disorders Unit, Neurology Service, Internal Medicine Department, Hospital de Clínicas; Universidade Federal do Paraná (UFPR); Curitiba Paraná Brazil
7. Cognitive and Behavioral Neurology Unit, Department of Internal Medicine, Faculty of Medicine; Federal University of Minas Gerais; Belo Horizonte Minas Gerais Brazil
8. Department of Internal Medicine; Universidade Federal do Rio Grande do Sul; Porto Alegre Brazil
9. Department of Medical Genetics; School of Medical Sciences; University of Campinas (UNICAMP); Campinas São Paulo Brazil