Arruda, Marco A., Renato Arruda, Regina C. A. P. Albuquerque, and Marcelo E. Bigal. “Uncommon Headache Syndromes in the Pediatric Population”. Headache Medicine 2, no. 2 (June 30, 2011): 50–60. Accessed May 29, 2025. https://www.headachemedicine.com.br/index.php/hm/article/view/80.