Kumar, Mukesh, Ashutosh Kumar, and Ajay Kumar Lal Das. “Assessment of Pulmonary Function Abnormalities Among Chronic Smokers and Non-Smokers”. Student’s Journal of Health Research Africa 7, no. 2 (June 30, 2026): 12. Accessed October 21, 2026. https://sjhrafrica.org.sjhresearchafrica.org/index.php/public-html/article/view/3049.