Muhammad Jamali, D. ., T. . Ali, B. . Liaqat Chaudhry, S. R. . Hassan, N. . Akhtar, and M. M. Saifullah Awan. “Efficacy of Spinal Epidural Anesthesia and Sub Diaphragmatic Lidocaine With Spinal Anesthesia in Reduction of Shoulder Pain: Randomized Clinical Trial: Efficacy of Spinal Epidural Anesthesia and Sub Diaphragmatic Lidocaine”. Pakistan BioMedical Journal, vol. 5, no. 5, May 2022, pp. 282-7, doi:10.54393/pbmj.v5i5.468.