Sunyal, D.K. et al. 2012. 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. Journal of Enam Medical College. 2, 1 (Sep. 2012), 29–32. DOI:https://doi.org/10.3329/jemc.v2i1.11926.