== References ====External links==* Cornelia de Lange Syndrome Foundation, Inc.* Children's Hospital of Philadelphia, The Center for Cornelia de Lange Syndrome and Related Diagnoses* The University of Chicago Genetic Services Laboratory* Development of Diagnostics and Therapeutics for Cornelia de Lange Syndrome* Genetic Alliance* Cleft and Craniofacial Anomalies* Pediatric Database (PEDBASE)* GeneReviews/NCBI/UW/NIH entry on Cornelia de Lange syndrome* Leiden Open Variation Database for Cornelia de Lange Syndrome