Freire , Marina de Oliveira, et al. “EFFICACY OF BOTULINUM TOXIN TYPE A IN THE TREATMENT OF REFRACTORY CHRONIC MIGRAINE: ANALYSIS OF CLINICAL OUTCOMES”. Revista Ibero-Americana de Humanidades, Ciências E Educação, vol. 12, no. 5, May 2026, pp. 1-11, https://doi.org/10.51891/rease.v12i5.25828.