Hussain, N. “HAEMOGLOBIN A1C AND IRON DEFICIENCY ANAEMIA OUR UNDERSTANDING THROUGH THE DECADES”. Romanian Journal of Diabetes Nutrition and Metabolic Diseases, Vol. 22, no. 3, Sept. 2015, pp. 289-96, http://rjdnmd.org/index.php/RJDNMD/article/view/136.