Cheema, A.A. et al. 2022. 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, 4 (Sep. 2022), 1355–58. DOI:https://doi.org/10.51253/pafmj.v72i4.4498.