HAGAN, John. Letter to the Editor: A Randomized, Double-Blinded, Placebo-Controlled, Cross Over Study Evaluating the Efficacy and Safety of Timolol Ophthalmic Solution as an Acute Treatment of Migraine. Kansas Journal of Medicine, [S. l.], v. 13, n. S2, p. 29–30, 2021. DOI: 10.17161/kjm.vol1315733. Disponível em: https://journals.ku.edu/kjm/article/view/15733. Acesso em: 6 apr. 2025.