"Not otherwise specified headache" in emergency department: an analysis of 149,603 visits to nine Upa’s 24h in Fortaleza. Headache Medicine, [S. l.], v. 13, n. Supplement, p. 46, 2022. DOI: 10.48208/HeadacheMed.2022.Supplement.46. Disponível em: https://headachemedicine.com.br/hm/article/view/719. Acesso em: 22 jan. 2026.