Yazici, O. ., S. . Gulen, C. Yenisey, U. Eryilmaz, B. . Abas, and M. . Polatli. “Comparison of Inflammation Biomarkers Among Chronic Obstructive Pulmonary Disease Groups: A Cross Sectional Study”. Nigerian Journal of Clinical Practice, vol. 23, no. 6, Oct. 2021, pp. 817-24, doi:10.4103/njcp.njcp_222_19.