KUTI, O.; FAPONLE, A.; ADEYEMI, A.; OWOLABI, A. Pain Relief in labour: A randomized controlled trial comparing pentazocine with Tramadol. Nepal Journal of Obstetrics and Gynaecology, [S. l.], v. 3, n. 1, p. 14–18, 2008. Disponível em: https://www.nepjol.info/index.php/NJOG/article/view/1433. Acesso em: 19 may. 2024.