Headache frequency among 71,267 admissions to an adult medical emergency in the city of Recife in 2021. Headache Medicine, [S. l.], v. 13, n. Supplement, p. 39, 2022. DOI: 10.48208/HeadacheMed.2022.Supplement.39. Disponível em: https://headachemedicine.com.br/hm/article/view/706. Acesso em: 22 jan. 2026.