Pacheco, Evelyn, Saulo Ribeiro, Mariana Okada, Jose Luís Carneiro, Marcio Nattan Portes Souza, and Carlos Eduardo Brandão. “Impact of the Implementation of a Headache Protocol on Cost Reduction in a Private Hospital Network: A Cost-Effectiveness Assessment”. Headache Medicine 15, no. Supplement (August 15, 2024): 60. Accessed May 24, 2026. https://headachemedicine.com.br/hm/article/view/1177.