References:
- Prenatal Diagnosis, by Sinuhe Hahn, Laird G. Jackson
- Handbook of prenatal diagnosis by Ronald J trent
- Journal of Prenatal Diagnosis and Therapy, by J Prenat Diagn Ther
- Cochrane Search - Second trimester serum tests for Down#$#s Syndrome screening; Authors: S Kate Alldred, Jonathan J Deeks, Boliang Guo, James P Neilson, Zarko Alfirevic, Mary Pennant
- Prenatal Testing - (http://americanpregnancy.org/prenatal-testing)
- Spina Bifida - (http://americanpregnancy.org/birth-defects/spina-bifida/)
- Frequently Asked Questions about Prenatal Screening for Downs Syndrome and Neural Tube Defects - (http://library.nhsggc.org.uk/mediaAssets/Medical%20Genetics/Prenata%20Screening%20FAQ.pdf)
- Chorionic villus sampling and amniocentesis - (https://www.rcog.org.uk/globalassets/documents/patients/patient-information-leaflets/pregnancy/pi-chorionic-villus-sampling-and-amniocentesis.pdf)
- Prenatal screening and diagnostic tests - (http://www.health.wa.gov.au/docreg/Education/Prevention/Genetics/HP3131_prenatal.pdf)
Editor: Dr. Lakshmi Venkataraman
Technically Checked by: Lingaraj
