“Bilateral sphenopalatine and bioccipital block as a method for reversing chronic migraine: a case of refractory headache following meningeal cryptococcosis”, Headache Med, vol. 15, no. Supplement, p. 142, Aug. 2024, Accessed: Jan. 22, 2026. [Online]. Available: https://headachemedicine.com.br/hm/article/view/1285