1. National Center on Birth Defects and Developmental DisabilitiesCenters for Disease Control and Prevention Atlanta Georgia
2. Carter Consulting, Incorporated Atlanta Georgia
3. Massachusetts Department of Public HealthCenter for Birth Defects Research and Prevention Boston Massachusetts
4. Texas Department of State Health ServicesBirth Defects Epidemiology and Surveillance Branch Austin Texas
5. Department of Family and Community MedicineBaylor College of Medicine Houston Texas
6. Department of Community and Family HealthCollege of Public Health, University of South Florida Tampa Florida
7. Oak Ridge Institute for Science and Education Oak Ridge Tennessee
8. Arkansas Center for Birth Defects Research and Prevention, the Arkansas Children's Research Institute and the University of Arkansas for Medical SciencesDepartment of Epidemiology Little Rock Arkansas
9. Division of Public HealthNorth Carolina Department of Health and Human Services Raleigh North Carolina
10. College of Public HealthUniversity of Iowa Iowa City Iowa
11. Utah Birth Defect NetworkUtah Department of Health Salt Lake City Utah
12. Oklahoma Birth Defects RegistryOklahoma State Department of Health Oklahoma City Oklahoma
13. Department of PediatricsSection of Hematology‐Oncology, Baylor College of Medicine Houston Texas