Abdel Khalek El-Sherbiny, N., Younis Elsary, A., & H. Ibrahim, E. "Application of the 5S-KAIZEN Approach in Improving the Productivity and Quality of the Healthcare System: An Operational Research", Journal of Patient Safety & Quality Improvement, 5, 4, 2017, 594-600. doi: 10.22038/psj.2017.9468