1. Department of Genetics; Children's Hospital of Eastern Ontario; Ottawa, Ontario
2. Department of Medical Genetics; Pellegrin Children's Hospital; Bordeaux France
3. University of Arizona Phoenix Genetics Program; Phoenix Children's Hospital and CHC St. Joseph's Hospital; Phoenix, Arizona
4. Division of Genetics, Department of Pediatrics, William Beaumont Hospital; Royal Oak, Michigan; Department of Pediatrics, Wayne State University School of Medicine; Detroit, Michigan
5. Clinical genetic Unit; Hôpital Robert Debré; Paris, France
6. Division of Medical Genetics, Department of Child Health; University of Missouri School of Medicine; Columbia, Missouri
7. Institut für Humangenetik; Universitätsklinikum Essen; Germany
8. Medical Genetics Birth Defects Center, Ahmanson Department of Pediatrics; Cedars-Sinai Medical Center, UCLA School of Medicine; Los Angeles, California
9. Division of Medical Genetics; A. I. duPont Hospital for Children; Wilmington, Delaware
10. Department of Pediatrics; University of Kentucky; Lexington, Kentucky
11. Department of Pediatrics and Medical Genetics; University of Amsterdam; Amsterdam The Netherlands
12. Division of Medical Genetics; Department of Pediatrics, University of Iowa Hospitals & Clinics; Iowa
13. Genetics and Teratology Unit, Pediatric Service; MassGeneral for Children; Boston, Massachusetts
14. The Children's Hospital of Philadelphia and the University of Pennsylvania School of Medicine; Philadelphia, Pennsylvania
15. Serviço de Genética Clínica, Hospital de Reabilitação de Anomalias Craniofaciais; Universidade de São Paulo; Bauru, São Paulo Brazil
16. Departement de Genetique Medicale; Hopital d'Enfants de la Timone; France
17. Department of Human Genetics; Hadassah University Medical Center; Jerusalem Israel
18. Department of Pediatrics, Division of Molecular and Human Genetics; The Ohio State University and Children's Hospital; Columbus, Ohio
19. Department of Pediatrics; Gundersen Lutheran Medical Center; La Crosse, Wisconsin