GRIZHIMALSKY, Yevhenii; HARHA, Andrii. Patient-controlled epidural analgesia for labor – a step forward in Ukrainian obstetrics. Pain medicine, [S. l.], v. 4, n. 3, p. 67–70, 2019. DOI: 10.31636/pmjua.v4i3.5. Disponível em: https://painmedicine.org.ua/index.php/pnmdcn/article/view/208. Acesso em: 21 mar. 2026.