Aslam, Aneel, and Abdul Waheed. 2021. “Comparison of Forced Expiratory Volume in Six Seconds and FEV1/FEV6 Ratio Among Smokers and Non Smokers: FEV6 & FEV1/ FEV6 in Smokers”. Journal of Aziz Fatimah Medical & Dental College 3 (1):21-24. https://doi.org/10.55279/jafmdc.v3i1.117.