Mishra, Hitesh, Monesh Likhitkar, Adil Ali Shakur, Lalit Mohan, and Harihar Dikshit. “Study of Pulmonary Function Test Parameters in Patients of a Tertiary Care Hospital: An Observational, Prospective Study”. International Archives of BioMedical and Clinical Research 6, no. 2 (June 29, 2020): PH1-PH4. Accessed May 25, 2022. https://iabcr.org/index.php/iabcr/article/view/591.