Choudhary, Prema Ram, and Munna Jaipal. “Study of Severity of Syndrome-X on Lung Function Impairment in Indian Population”. International Journal of Clinical and Experimental Physiology 8, no. 2 (July 29, 2021): 70-73. Accessed April 19, 2024. https://www.ijcep.org/index.php/ijcep/article/view/597.