DR. BHAUSAHEB DATTATRAYA GAIKWAD. COMPARATIVE STUDY OF EPIDURAL BUTORPHANOL AND EPIDURAL TRAMADOL FOR POST OPERATIVE ANALGESIA. International Journal of Medical Science And Diagnosis Research, [S. l.], v. 3, n. 2, 2019. Disponível em: https://www.ijmsdr.com/index.php/ijmsdr/article/view/248. Acesso em: 18 may. 2026.