The Effect of Applying the DMAIC Model for Continuous Improvement in Reducing Supply chain risks : an analytical study of the opinions of a sample of managers in the General Company for the Pharmaceutical Industry and Medical Appliances / Samarra. (2023). NTU Journal for Administrative and Human Sciences (JAHS), 3(3), 117-137. https://doi.org/10.56286/ntujahs.v3i3.557