A Comparison of Two Invasive Techniques Unilateral and Bilateral Celiac Plexus Block in The Management of Relieving Pain in Advanced Upper Abdominal Cancer Patients. J Fatima Jinnah Med Univ [Internet]. 2018 Nov. 23 [cited 2026 Jun. 15];8(4). Available from: https://mail.jfjmu.com/index.php/ojs/article/view/163