NEERAJ, JOHN PRAMOD, and JOYDEEP SINGH. 2012. “Effect Of Advanced Gestation On Cellular Activity In Respiratory System In Females: A Study Of Alveolar Ventilation Parameters In Pregnant Women Of North India”. International Journal of Pharma and Bio Sciences 3 (1):31-37. https://ijpbs.net/index.php/journal/article/view/1226.