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"Iron and Iron Deficiency". Centers for Disease Control and Prevention. 23 February 2011. Archived from the original on 8 September 2014. Retrieved 12 August 2014.
Moshfegh A, Goldman J, Cleveland L (September 2005). "Table A12: Iron"(PDF). What we eat in America, NHANES 2001-2002: usual nutrient intakes from food compared to dietary reference intakes. National Health and Nutrition Examination Survey (NHANES) (Report). US Department of Agriculture, Agricultural Research Service. Archived from the original on 6 January 2015.