1. Department of Human Genetics New York State Institute for Basic Research in Developmental Disabilities Staten Island New York
2. Department of Human Genetics Emory University School of Medicine Atlanta Georgia
3. Wessex Regional Genetics Laboratory Salisbury NHS District Hospital Salisbury United Kingdom
4. Biochemical and Molecular Genetics Hospital Clinic de Barcelona, IDIBAPS and CIBERER Barcelona Spain
5. Department of Genetics and Evolutionary Biology, Institute of Biosciences Universidade de São Paulo São Paulo Brazil
6. Asuragen, Inc. Austin Texas