NORD: Pallister Killian Mosaic Syndrome 
Offers the synonyms, a general discussion and further resources.
http://www.rarediseases.org/search/rdbdetail_abstract.html?disname=Pallister%20Killian%20Mosaic%20SyndromeNational Library of Medicine
The synonyms of chromosome 12p tetrasomy syndrome, a summary and a list of major features.
http://www.nlm.nih.gov/archive/20061212/mesh/jablonski/cgi/jablonski/syndrome_cgif5c5.html
PKS Support
An online support group, with a discussion forum, family photos and informal surveys.
http://groups.yahoo.com/group/pks_support/
PKS Kids
Includes biographies and photos of children with the syndrome, first-hand information from parents, and links to related support and equipment resources.
http://www.pkskids.net/
Jake's World
Features the biography, photos and videos of a child with PKS.
http://www.jakezane.com/
Bigger than our Bodies
Contains news, events and links related to PKS.
http://moonshines.com/pks/
Frappr Maps: PKS Support
A map of individuals with the condition around the world, including photos.
http://www.frappr.com/pkssupport
OrphaNet: Tetrasomy 12p
A collection of global organizations and support groups related to the genetic condition.
http://www.orpha.net//consor/cgi-bin/OC_Exp.php?Lng=GB&Expert=884
Pallister-Killian Mosaic Syndrome
Offers overview, support and news in English and Italian.
http://www.pk-syndrome.org/
