References and Links
Website sources
www.anencephalie-info.org/e/faq.php
www.ncbi.nlm.nih.gov/pubmedhealth/PMH0002547/
www.medicinenet.com/spina_bifida_and_anencephaly/page3.htm
www.emedicinehealth.com/spina_bifida/article_em.htm
www.spinabifidaassociation.org/site/c.liKWL7PLLrF/b.2642327/k.5899/FAQ_About_Spina_Bifida.htm
Other sources
Wikipedia helped provide information as well as copyright friendly images.
- commons.wikimedia.org/wiki/Main_Page
Extra reading
Principles of Development 2nd Edition
Lewis Wolpert
Published 2002