Eman Yassin Salem, E.K.Z. , M.M.A.tran. 2017. Impact of Incentive Spirometry on Diaphragmatic Excursion in upper abdominal surgeries. International Journal of Scientific Research and Management (IJSRM). 5, 8 (Aug. 2017), 6899–6914. DOI:https://doi.org/10.18535/ijsrm/v5i8.43.