Hamidullah, Sajjad Ali, Ashraf, Imranullah, and Ishtiaq Ahmad. “Investigating Fibrinogen Levels As a Biomarker for Immune Inflammation Severity in COPD Patients across GOLD Stages”. Journal of the Pakistan Medical Association 75, no. 04 (March 20, 2025): 556–563. Accessed July 8, 2026. https://jpma.org.pk/index.php/public_html/article/view/11531.