Jindal S, Khilnaniq G, Aggarwal A, Mohan A, Kumar R, Nath A, Chaudhary D, Mohan U, Christopher D, Talwar D. Chronic Obstructive Pulmonary Disease. JEFI [Internet]. 2024 May 31 [cited 2024 Nov. 21];2((1Supp):S171 - S172. Available from: https://efi.org.in/journal/index.php/EFIjournal/article/view/257