“The Comparison of Analgesic Efficacy of Epidurally Given Tramadole and Morphine in Pediatric Urologic Operations ” (2021) Annals of Medical Research, 10(2), pp. 0071–0075. Available at: http://www.annalsmedres.org/index.php/aomr/article/view/2962 (Accessed: 10 May 2025).