- Michael Gerard Puharic Memorial Fund
 - Provides financial and educational support to parents with newborns affected with Trisomy 13 and other chromosome disorders. - Rainbows from Down Under
- Providing information and support for Trisomy 18, 13, and other related Chromosomal Disorders.
- Support Organization for Trisomy 13 and 18
- Info about annual conferences, literature, newsletter, and links to other resources for families having a child with Trisomy 18, 13, or other chromosome disorders.
- Wikipedia: Patau Syndrome
- User-edited article about Patau Syndrome, also known as Trisomy 13, a disease in which a patient has an additional chromosome 13.
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