Extensor/flexor ratio of neck muscle strength and electromyographic activity of individuals with migraine: a cross-sectional study - Benatto, Mariana Tedeschi; Florencio, Lidiane Lima; Bragatto, Marcela Mendes; Lodovichi, Samuel Straceri; Dach, Fabiola; Grossi, Débora Bevilaqua (European Spine Journal, 2019)