From the National Center for Biotechnology InformationPubMed.gov
US National Library of Medicine National Institutes of Health
Survival of children with trisomy 13 and trisomy 18: A multi-state population-based study.
http://www.ncbi.nlm.nih.gov/pubmed/26663415
For both trisomies, gestational age was the strongest predictor of mortality.... This study found survival among children with T13 and T18 to be somewhat higher than those previously reported in the literature, consistent with recent studies reporting improved survival following more aggressive medical intervention for these children. READ MORE