Sahar, W., Ajaz, N., Haider, Z. and Jalal, A. 2020. Effectiveness of Pre-operative Respiratory Muscle Training versus Conventional Treatment for Improving Post operative Pulmonary Health after Coronary Artery Bypass Grafting. Pakistan Journal of Medical Sciences. 36, 6 (Aug. 2020). DOI:https://doi.org/10.12669/pjms.36.6.2899.