“Comparative Effectiveness of Continuous Subcostal Transversus Abdominis Plane Block Versus Thoracic Epidural Analgesia in Postoperative Pain Management Following Major Open Abdominal Surgery: A Prospective Observational Study”. Advances in Anesthesia and Pain Medicine 3, no. 1 (August 5, 2025). Accessed October 12, 2025. https://www.aapm-journal.com/site/article/view/53.