A dictionary of over 700 congenital syndromes and chromosomal aberrations which are associated with mental retardation, drawn from Stanley Jablonski's book, Dictionary of Syndromes and Eponymic Diseases. 2nd ed. Malabar, FL, Krieger, 1991. Includes bibliographies, and, where available, links to McKusick's Online Mendelian Inheritance in Man. As of 2004, no new updates are planned.