1. Department of Pediatrics, Section of Hematology-Oncology; Baylor College of Medicine; Houston Texas
2. National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention; Atlanta Georgia
3. Department of Family and Community Medicine; Baylor College of Medicine; Houston Texas
4. Massachusetts Department of Public Health; Center for Birth Defects Research and Prevention; Boston Massachusetts
5. Texas Department of State Health Services, Birth Defects Epidemiology and Surveillance Branch; Austin Texas
6. Division for Vital Records and Health Statistics, Michigan Department of Health and Human Services; Michigan Birth Defects Registry; Lansing Michigan
7. Oak Ridge Institute for Science and Education; Oak Ridge Tennessee
8. Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics; Baylor College of Medicine; Houston Texas
9. Section of Birth Defects Research, Department of Pediatrics; Arkansas Reproductive Health Monitoring System, Arkansas Children's Research Institute and University of Arkansas for Medical Sciences; Little Rock Arkansas
10. Department of Pediatrics; Rush Medical College; Chicago Illinois
11. Department of Community and Family Health, College of Public Health; University of South Florida; Tampa Florida
12. Division of Family Health and Preparedness, Utah Department of Health; Utah Birth Defect Network; Salt Lake City Utah
13. Carter Consulting, Incorporated; Atlanta Georgia