Wange, P., Jiandani, M.P. and Mehta, A. 2016. 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, 11 (Dec. 2016), 4762–4766. DOI:https://doi.org/10.18203/2320-6012.ijrms20163763.