Virtual Children's Hospital: Enchondromatosis Clinical presentation, etiology and imaging findings. http://www.vh.org/Providers/TeachingFiles/PAP/MSDiseases/Enchondromatosis.html

NORD: Ollier Disease Sample report, plus links to organisations. [Fee required for full report] http://www.rarediseases.org/search/rdbdetail_abstract.html?disname=Ollier%20Disease

Institute of Child Health: Jacobsen Syndrome Clinical synopsis, plus research summaries. http://www.ich.ucl.ac.uk/units/mhu/fws/frames/jsoframe.htm