Naznin, R., Nazrina, S., Hussain, M., & Naznen, F. (2025). Influence of Cigarette Smoking on Forced Expiratory Volume in the First Second (FEV1) among Male Smokers. Community Based Medical Journal, 14(1), 11–15. https://doi.org/10.3329/cbmj.v14i1.79261