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MANOJ DA, VIKNES DR, YACHENDRA D, N DL. COMPARISON OF EPIDURAL TRAMADOL AND EPIDURAL FENTANYL FOR POSTOPERATIVE PAIN AND HEMODYNAMIC CHANGES: A RANDOMIZED CONTROLLED TRIAL. TPM [Internet]. 2025 Jul. 7 [cited 2026 Mar. 7];32(S3 (2025): Posted 07 July):1566-72. Available from: https://tpmap.org/submission/index.php/tpm/article/view/868