Dr. K P Jeswanth Kiran, Dr. Uma MA, Dr G Kalyan Kumar, Dr. Jagadish K, Dr. Pillarsetty Pavan Kumar, and Dr. N S Prasad. “Comparison of Ccq, Cat Score & Bode Index in Assessing Severity and Exacerbations of Copd - a Comprehensive Study”. International Journal of Pharmacy Research & Technology (IJPRT), vol. 15, no. 2, July 2025, pp. 272-9, https://www.ijprt.org/index.php/pub/article/view/685.