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Discusses purpose and procedure of chorionic villus sampling. Includes list of advantages and disadvantages compared to amniocentesis.
http://www.hon.ch/
Reference for the clinical geneticist.
http://www.perinatology.com/
Article by Elizabeth Kristol, addressing the safety and necessity of screening.
http://www.firstthings.com/
Definitions of the following testing procedures: amnioscentesis, ultrasound, chorionic villi sampling, and fetal development.
http://www.wprc.org/