Down Syndrome: Symptoms & Causes

Down syndrome is a genetic condition where a person has an extra copy of chromosome 21 for a total of 47 chromosomes instead of 46.

Down syndrome - Wikipedia

Down Syndrome Boston Children's Hospital

Are down syndromes always short and stocky? - Quora

Down Syndrome: Facts and Statistics

Angelman Syndrome: What It Is, Symptoms & Treatment

What is Down Syndrome?

I've heard people saying down syndromes are always little in height. I'm 5 ft 4. Is that normal for downs? - Quora

What is the most struggling story with down syndrome? - Quora

Down syndrome: MedlinePlus Genetics