Last Updated: 3 years ago in Research Search for any published articles relating to r(20) syndrome on PubMed here: http://www.ncbi.nlm.nih.gov/pubmed?Db=pubmed&Cmd=DetailsSearch&Term=%28Chromosome+20%5Bmh%5D+ring+chromosomes%5Bmh%5D%29+OR+ring+chromosome+20%5Btw%5D+OR+ring+20+chromosome%5Btw%5D 1 0
