“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), pp. 117–137. doi:10.56286/ntujahs.v3i3.557.