S. Asika and S. Suganthi, “A Study on Mathematical Analysis of Chronic Obstructive Pulmonary Disease (COPD) Patients Using Statistics”, IJRESM, vol. 5, no. 3, pp. 5–8, Mar. 2022, Accessed: Jul. 03, 2024. [Online]. Available: https://journal.ijresm.com/index.php/ijresm/article/view/1808