1. 1. Geneva, S., & World Health Organization. Haemoglobin concentrations for the diagnosis of Anemia and assessment of severity. Vitamin and Mineral Nutrition Information System. Document.2011. Reference WHO. NMH/NHD/MNM/11.1. http://www. who. int/entity/vmnis/indicators/haemoglobin.
2. 2. De Benoist, B., Cogswell, M., Egli, I., and McLean, E. Worldwide prevalence of Anemia 1993-2005; WHO Global Database of Anemia.2008
3. 3. World Health Organization WHO South-East Asia Region Publications 2006-2010.2011.
4. 4. Balcı, Y. I., Karabulut, A., Gürses, D., and Çövüt, I. E. Prevalence and risk factors of anemia among adolescents in Denizli, Turkey. Iranian journal of pediatrics, 2012,22(1), 77.
5. 5. Tesfaye, M., Yemane, T., Adisu, W., Asres, Y., and Gedefaw, L. Anemia and iron deficiency among school adolescents: burden, severity, and determinant factors in southwest Ethiopia. Adolescent health, medicine and therapeutics, 2015, 6, 189