Priya Charan, Reshu Gupta, and Prahlad Dhakar. “Prevalence of Asymptomatic Airflow Obstruction Among Patients Visiting a Tertiary Health-Care Center”. Asian Journal of Medical Sciences 13, no. 10 (October 1, 2022): 158–162. Accessed October 15, 2024. https://www.nepjol.info/index.php/AJMS/article/view/41882.