References

http://en.wikipedia.org/wiki/Spina_bifida
http://www.emedicinehealth.com/spina_bifida/article_em.htm
http://www.cdc.gov/ncbddd/spinabifida/facts.html
http://www.spinabifida.net/
http://www.medicinenet.com/spina_bifida_and_anencephaly/article.htm
http://www.americanpregnancy.org/birthdefects/spinabifida.html
http://www.emedicinehealth.com/spina_bifida/page10_em.htm
http://www.nurse-ocha.com/2009/02/spina-bifida.html