Universidade Federal do Rio Grande do Sul (UFRGS) - Post-graduate program in Medical Science, Universidade Federal do Rio Grande do Sul (UFRGS) - Post-graduate program in Medical Science, Federal University of Rio Grande do Sul (UFRGS/PPGA), Hospital de Clínicas de Porto Alegre (HCPA) - Neurology Service, Pontificia Universidade Catolica do Rio Grande do Sul (PUCRS) - Escola de Ciências da Saúde e da Vida, Universidade Federal do Rio Grande do Sul (UFRGS) - Post-graduate program in Medical Science, Federal University of Para, Hospital Sirio-Libanes, Queen Mary University of London - Preventive Neurology Unit, University of Toronto, Cleveland Clinic, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA) and Hospital de Clínicas de Porto Alegre (HCPA) - Neurology Service

affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Universidade Federal do Rio Grande do Sul (UFRGS) - Post-graduate program in Medical Science, affiliation not provided to SSRN, Federal University of Santa Maria and Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA)