Umar Shahzad et al. 2026. Comparison of Lumbar Erector Spinae Plane (ESP) Block versus Fentanyl for Post-Operative Pain Control in Minimally Invasive Lumbar Disc Surgery. Pakistan Armed Forces Medical Journal. 76, 3 (Jun. 2026), 372–376. DOI:https://doi.org/10.51253/pafmj.v76i3.11294.