A comparative study of the effect of Normal saline and butorphanol as adjuvant to intrathecal bupivacaine for postoperative analgesia in total abdominal hysterectomy. Journal of Carcinogenesis, [S. l.], v. 24, n. 7s, p. 432–436, 2025. DOI: 10.64149/J.Carcinog.24.7s.432-436. Disponível em: https://carcinogenesis.com/index.php/JOC/article/view/1079. Acesso em: 5 feb. 2026.