Study of Forced Expiratory Volume in First Second (FEV1) and Ratio of Forced Expiratory Volume in First Second and Forced Vital Capacity in Percentage (FEV1/FVC%) in Pregnant Women. (2012). Journal of Enam Medical College, 2(1), 29-32. https://doi.org/10.3329/jemc.v2i1.11926