BudhathokiP., ShresthaD. B., SedhaiY. R., BaniyaR., BhattA., ChaudharyK., AcharyaA., RajkarnikarR., BasnetM., and Atreya A. “Prevalence and Risk Factors of COPD in Nepal: A Systematic Review and Meta-Analysis”. Journal of Nepal Health Research Council, Vol. 19, no. 04, Mar. 2022, pp. 652-60, doi:10.33314/jnhrc.v19i04.3543.