Souza, C. de B. T. de, P. G. Ferreira, W. G. N. Botelho, K. F. Pereira, and A. R. de A. César. “Cervicogenic Headache, Incidence and Differential Diagnosis”. Headache Medicine, vol. 14, no. Supplement, Dec. 2023, p. 24, https://headachemedicine.com.br/index.php/hm/article/view/846.