Fragoso, Y. D., Fonseca, P. L. da, Fortinguerra, M. B., Cominato, L., Matte, G. de O., & Oliveira, C. M. (1998). Management of primary headache in emergency services of Santos and surrounding towns. São Paulo Medical Journal, 116(2), 1650–1653. Retrieved from https://periodicosapm.emnuvens.com.br/spmj/article/view/2267