PEPPIN, DO, FACP, J. F. The use of methadone “as needed”, is it justified?. Journal of Opioid Management, [S. l.], v. 5, n. 1, p. 7–9, 2018. DOI: 10.5055/jom.2009.0001. Disponível em: https://wmpllc.org/ojs/index.php/jom/article/view/919. Acesso em: 2 may. 2024.