Usman, Ali, Fahad Rafiq Butt, Romana Shaida Durrani, and Ateeq Ur Rehman Ghafoor. 2020. “Pain Relief in a Patient With Massive Sino-Nasal Tumor”. Anaesthesia, Pain & Intensive Care 24 (4), 457-59. https://doi.org/10.35975/apic.v24i4.1320.