National Anemia Action Council
http://www.anemia.org

Mayo Clinic
http://www.mayoclinic.com/health/iron-deficiency-anemia/DS00323

National Heart, Lung, and Blood Institute
http://www.nhlbi.nih.gov/health/dci/Diseases/ida/ida_whatis.html

Medline Plus
http://www.nlm.nih.gov/medlineplus/ency/article/000584.htm

The National Women’s Health Information Center
http://womenshealth.gov

University of Maryland Medical Center
http://www.umm.edu/blood/aneiron.htm

Iron Disorders Institute
http://www.irondisorders.org/Disorders/TooLittleIron.asp