HERNDON, PHARMD, BCPS, C. M.; JOHNS, MD, A. Is oral tramadol a reasonable PRN analgesic?. Journal of Opioid Management, [S. l.], v. 4, n. 1, p. 8–10, 2018. DOI: 10.5055/jom.2008.0001. Disponível em: https://wmpllc.org/ojs/index.php/jom/article/view/965. Acesso em: 4 may. 2024.