1. National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention; Atlanta Georgia
2. Carter Consulting, Inc.; Atlanta Georgia
3. Birth Defects Epidemiology and Surveillance Branch, Texas Department of State Health Services; Austin Texas
4. National Birth Defects Prevention Network; Houston Texas
5. Florida Birth Defects Registry; Florida Department of Health; Tallahassee Florida
6. Department of Pediatrics; Baylor College of Medicine; Houston Texas
7. University of Texas Southwestern Medical Center; Dallas Texas
8. Department of Community and Family Health, College of Public Health; University of South Florida; Tampa Florida