BEARD, J. L. Iron Metabolism : A Comprehensive Review. Nutr. Rev. 1996, 54, 295-317
KANKE, Y. Oral Contraceptive Steroids : Effects on Iron and Zinc Levels and on Tryptophan Pyrrolase and Alkaline Phosphatase Activities in Tissues of Iron-Deficient Anemic Rats. Am. J. Clin. Nutr. 1980, 33, 1244-1250