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. NTU-JAHS [Internet]. 2023 Jul. 10 [cited 2024 Nov. 24];3(3):117-3. Available from: https://journals.ntu.edu.iq/index.php/NTU-JMS/article/view/557