Moayyedkazemi, A., and M. H. Rahimirad. “Evaluating Serum C-Reactive Protein Level in Patients With Chronic Obstructive Pulmonary Disease and Its Correlation With Disease Severity”. Biomedical Research and Therapy, Vol. 5, no. 11, Nov. 2018, pp. 2784-8, doi:10.15419/bmrat.v5i11.494.