Wange, Pallavi, Mariya P. Jiandani, and Amita Mehta. “Incentive Spirometry Versus Active Cycle of Breathing Technique: Effect on Chest Expansion and Flow Rates in Post Abdominal Surgery Patients”. International Journal of Research in Medical Sciences 4, no. 11 (December 19, 2016): 4762–4766. Accessed October 12, 2025. https://www.msjonline.org/index.php/ijrms/article/view/169.