"Chorionic Villus Sampling (CVS)" (April, 2007). March of Dimes. Retrieved February 15, 2008, from http://www.marchofdimes.com/printableArticles/14332_1165.asp

This article focuses mainly on who is offered chorionic villus sampling. People may be concerned about a genetic defect because of a first-trimester screening, previous children or pregnancies with birth defects, maternal age, or family history are offered this test. The major decision, after choosing to have the test done, is to select an experienced doctor. When CVS was first introduced as a prenatal test, the risk of miscarriage was much higher. But as doctors gain experience the rate of risk is decreasing.