Fortes, Yasmine Maria Leódido, Eduardo Erudilho, Taís Souza da Silva, Wallyson Pablo de Oliveira Souza, and Raimundo Silva-Neto. “Secondary Hypnic Headache: A Literature Review in the Last 34 Years”. Headache Medicine 13, no. 3 (October 1, 2022): 163–166. Accessed May 11, 2024. https://headachemedicine.com.br/index.php/hm/article/view/648.