Zolfaghari, Mohammad, ُSeyed Jalil Mirhosseini, Maryam Baghbeheshti, and Brent A. Bauer. 2018. “ The Effect of Classic Chest Physiotherapy on Postoperative Pain Scores and Hospital Stay in Patients Undergoing Off-Pump Coronary Artery Bypass Graft Surgery: A Randomized Clinical Trial: ”. Galen Medical Journal 7 (May):e838. https://doi.org/10.31661/gmj.v7i.838.