WASET
    Mahmoud A. El-Banna,  Improving Patients Discharge Process in Hospitals by using Six Sigma Approach.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2012, vol. 68(8). 1378 - 1387
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/7844.