Valença, Marcelo Moraes, Luciana Patrízia A. Andrade-Valença, and Maria Helena Costa. “‘Next Time You Have a Headache, Remember – Pain Is an illusion…’”. Headache Medicine 3, no. 2 (June 30, 2012): 53–54. Accessed May 8, 2024. https://headachemedicine.com.br/index.php/hm/article/view/320.