Efficacy and tolerability of fixed association of oxycodone and naloxone in elderly patients with ribs fracture: An 18-month retrospective study. Emergency Care Journal, [S. l.], v. 15, n. 2, 2019. DOI: 10.4081/ecj.2019.8119. Disponível em: https://www.pagepressjournals.org/ecj/article/view/8119. Acesso em: 1 may. 2026.