Kowacs, Pedro André, Paulo Sergio Faro Santos, Elcio Juliato Piovesan, and Helio Afonso Ghizoni Teive. “Anything But a Shocking Solution – the Effectiveness of Cefaly® in Non-Migrainous Headache”. Headache Medicine 8, no. 4 (December 31, 2017): 138–139. Accessed April 23, 2024. https://headachemedicine.com.br/index.php/hm/article/view/269.