1. Postgraduation Program in Medical Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Paulo Gama 110, 90040-060 Porto Alegre, RS, Brazil
2. Postgraduation Program in Technology and Human Development, Universidade Estadual Paulista (UNESP), R. Quirino de Andrade 215, 01049-010 São Paulo, SP, Brazil
3. Technological and Industrial Development FAPERGS/CAPES, Department of Physiotherapy, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), R. Sarmento Leite 245, 90050-170 Porto Alegre, RS, Brazil
4. Statistic, Statistic Department, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
5. Neurology, Clinical Medicine Department, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
6. Neurology, Clinical Medicine Department, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA) and Postgraduation Program in Medical Science, UFRGS, Porto Alegre, RS, Brazil