http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Lng=FR&Expert=1715 France French trisomy chromosomes, human, pair 18 rare diseases chromosome 18, trisomy 18p
--- http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Lng=FR&Expert=96080 2011 France scientific and technical information trisomy telomere chromosome 18, trisomy 18p