Usman, Ali, Fahad Rafiq Butt, Romana Shaida Durrani, and Ateeq Ur Rehman Ghafoor. “Pain Relief in a Patient With Massive Sino-Nasal Tumor”. Anaesthesia, Pain & Intensive Care 24, no. 4 (September 2, 2020): 457-459. Accessed July 3, 2024. https://apicareonline.com/index.php/APIC/article/view/1320.