1. Children's Defense Fund. Facts about child care in America: July 8, 1998. Available at: http://www.childrensdefense.org7cc_facts.html
2. . Accessed November 17, 1998.
3. Child care and welfare reform;Lino;Family Econ Nutr Rev.,1998
4. Child care in the United States today The future of children;Hofferth;Financing Child Care.,1996
5. Recommendations to prevent and control iron deficiency in the United States. April 3, 1998/47(RR-3);l–36. Available at: http:// www. cdc.gov/epo/mmwr/preview/mmwrhtmV00051880 .htm