Bibliography

"Down Syndrome." Kids Health. 2008. Nemours Foundation. 23 Apr. 2008
http://kidshealth.org/parent/medical/genetic/down_syndrome.html.

2007. Down Syndrome. 23 Apr. 2008http://www.revolutionhealth.com/healthy-.

23 Apr. 2008 http://embryology.med.unsw.edu.au/Defect/images/down_syndrome.jpg.

23 Apr. 2008 http://test.cvtcollege.org/Ac_Programs/dms_vascular/images/03C0B067CF5743D3BD1331B3D1C79C01.jpg.

Manchester. 23 Apr. 2008 .http://nscfa.web.its.manchester.ac.uk/images/Fetal/DSA%20images/Errington2.jpg