Sharaf, Amna. “Comparison of Postoperative Pain Relief Following Use of Spinal Anesthesia Versus General Anesthesia for Patients Undergoing Laparoscopic Cholecystectomy”. Anaesthesia, Pain & Intensive Care 22, no. 1 (May 7, 2019). Accessed July 3, 2024. https://apicareonline.com/index.php/APIC/article/view/584.