Alkhuzuie , Rafid A. “The Role of Immunization Status and Vitamin An in Outbreak of Measles Among Patients Admitted in Al-Yarmouk Teaching Hospital October 2010-April 2011”. Diyala Journal of Medicine, vol. 5, no. 2, Nov. 2019, pp. 19-28, https://www.djm.uodiyala.edu.iq/index.php/djm/article/view/376.