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. 2007 Nov 30;7:345. doi: 10.1186/1471-2458-7-345

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Copyright © 2007 Duque et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Iron nutritional status according to hemoglobin and ferritin values, by age group, in IMSS-Oportunidades (IO). Normal: Hemoglobin above the cut-off for anemia and ferritin > = 10 μg/L. Iron deficiency without anemia: ferritin < 10 μg/L and Hb > = cut-off for anemia, by age group. Anemia: Hb < cut-off for anemia, by age group. Iron deficiency anemia: ferritin < 10 μg/L and Hb < cut-off for anemia, by age group. Anemia due to other causes: ferritin ≥ 10 μg/L and Hb < cut-off for anemia, by age group.