Cheema, Ahmed Ammar, Amer Fakhr, Muhammad Shahid Khan, Shanzah Shahbaz, Syed Nazir Ahmed, and Muhammad Zahid Hussain. “Comparison of Respiratory Complications of COVID-19 Among Patients With Rheumatological Conditions Taking Biological Disease-Modifying Anti-Rheumatic Drugs and Conventional Synthetic Disease-Modifying Antirheumatic Drugs”. Pakistan Armed Forces Medical Journal 72, no. 4 (September 6, 2022): 1355–58. Accessed May 22, 2024. https://www.pafmj.org/PAFMJ/article/view/4498.