SHRESTHA, I N; DEO, G P; SHRESTHA, S K; NEUPANE, S; REGMI, B S. Epidural tramadol improves the quality of pain relief during labor. Journal of Chitwan Medical College, [S. l.], v. 6, n. 3, p. 14–19, 2017. DOI: 10.3126/jcmc.v6i3.16694. Disponível em: https://www.nepjol.info/index.php/JCMC/article/view/16694. Acesso em: 20 jul. 2026.