Adnan Riaz, Ahmad Ashar Ghuman, Sabeen Khalid. 2023. “Assessment of Serum Levels of the Matrix-Metalloproteinase-9, Prostaglandin E-2 and Cyclo-Oxygenase-2 As a Candidate Biomarker of Chronic Obstructive Pulmonary Disease (COPD)”. Pakistan Journal of Medical & Health Sciences 16 (11):439. https://doi.org/10.53350/pjmhs20221611439.