| DNA Identity Testing Center provides DNA paternity testing and DNA testing services - http://www.800dnaexam.com/ webadminDNA Identity Testing Center is a leading provider for DNA paternity testing and DNA testing services. |
| Mother and Child - http://www.hon.ch/ Discusses purpose and procedure of chorionic villus sampling. Includes list of advantages and disadvantages compared to amniocentesis. |
| Perinatology - http://www.perinatology.com/ |
| Picture Perfect - http://www.firstthings.com/ Article by Elizabeth Kristol, addressing the safety and necessity of screening. |