1. Division of Congenital and Developmental Disorders, National Center on Birth Defects and Developmental Disabilities, CDC
2. University of Utah, Salt Lake City
3. Washington University in St. Louis, Missouri
4. University of North Carolina, Chapel Hill
5. University of Wisconsin, Madison
6. University of Arizona, Tucson
7. University of Colorado School of Medicine, Aurora
8. Rutgers New Jersey Medical School, Newark
9. Colorado Department of Public Health and Environment, Denver