Headache diagnosis in an urgency and emergency unit: Public Health Relevance and its relationship with cost . Headache Medicine, [S. l.], v. 12, n. 1, p. 44–50, 2021. DOI: 10.48208/HeadacheMed.2021.8. Disponível em: https://headachemedicine.com.br/hm/article/view/435. Acesso em: 22 jan. 2026.