Chicago:Dr. Kalyan Kumar K, Dr. Shobha Mohammed, Dr. Ranjith Babu K. "D-Dimer And CRP As Biomarkers In COPD Patients: A Prospective Cohort" Example, Volume-4-issue-3-Year-2021-2589-9120. https://www.ijmsar.com/asset/images/uploads/16237691362664.pdf.