M. A. . Adnan, S. M. . Rehman, M. . Khan, A. . Ansari, and N. U. S. . Ansari, “Impact of Tramadol Administration on Cardio-Electrophysiological Balance following General Surgery”, Biol Clin Sci Res J, vol. 6, no. 7, pp. 78–80, Jul. 2025.