The following resources enable you to access useful information regarding chromosomal abnormalities and birth defects. This list also contains links to relevant support groups, parent organizations and government entities.
National Down Syndrome Society
The National Down Syndrome Congress
Genetic Alliance
http://www.geneticalliance.org
March of Dimes
National Organization for Rare Disorders
Chromosome 18 Registry and Research Society
SOFT (Support for Trisomy 13/18)
The Spina Bifida Association
http://www.spinabifidaassociation.org
The Cystic Fibrosis Foundation
National Institutes of Health
U.S. Department of Health & Human Services