Cavenaghi, V.B., Dobrianskyj, F.M., Olival, G.S. do, Carneiro, R.P.C.D. and Tilbery, C.P. 2017. Characterization of the first symptoms of multiple sclerosis in a Brazilian center: cross-sectional study. São Paulo Medical Journal. 135, 3 (Jun. 2017), 222–225.