Arshad, Abdul Rehman, Bilal Saeed, and Imran Khan. “Not All Patients With Severe Critical COVID-19 Pneumonia Benefit from Tocilizumab”. Pakistan Armed Forces Medical Journal 75, no. 4 (August 30, 2025): 626–630. Accessed September 26, 2025. https://www.pafmj.org/PAFMJ/article/view/8053.