Oliveira LB, Guimarães J, Silva DJ da, Jurno ME. Headache diagnosis in an urgency and emergency unit: Public Health Relevance and its relationship with cost . Headache Med [Internet]. 2021 Aug. 27 [cited 2024 Apr. 20];12(1):44-50. Available from: https://headachemedicine.com.br/index.php/hm/article/view/435