Isnoldo, H.S., Antunes, R., Utiumi, M.A.T., Marchioro, I.J.M., Kowacs, P.A. and Piovesan, E.J. 2024. Semiological and epidemiological aspects of difficult-to-treat chronic migraine-resistant form. Headache Medicine. 15, Supplement (Aug. 2024), 92.