Ghobrial, Hossam Zarif, and Ehab Hanafy Shaker. “Effectiveness of Multimodal Preemptive Analgesia in Major Pediatric Abdominal Cancer Surgery”. Anaesthesia, Pain & Intensive Care 23, no. 3 (October 12, 2019): 256-262. Accessed July 3, 2024. https://apicareonline.com/index.php/APIC/article/view/1132.