Dr Samuel Marcus. IVF techniquesPreimplantation Genetic Diagnosis (PGD). Available June 9, 2005

http://www.ivf-infertility.com/ivf/pgd.php

Babies by design..Available June 9, 2005

http://archives.cnn.com/2000/US/01/04/designer.babies/

Aaron Zitner. The Los Angeles Times. A Girl or Boy, You Pick. Available June 9, 2005

http://www.genetics-and-society.org/resources/items/20020723_latimes_zitner.html

All-in-one test for embryo screening. Available June 9, 2005

http://www.newscientist.com/article.ns?id=dn955

Bobby Webster Genetic Screening

http://www.debatabase.org/details.asp?topicID=82

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2005, Columbia University Press. genetic screening. genetic screening. Available June 2 2005

http://www.infoplease.com/ce6/sci/A0820470.html

EMBRYO SCREENING BY PREIMPLANTATION GENETIC DIAGNOSIS – PGD

www.care-life.com/ embryo_screening.htm