1. Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas.
2. Public Policy Center, and Professor, College of Dentistry, University of Iowa, Iowa City, Iowa.
3. Congenital Malformations Registry, New York State Department of Health, Troy, New York.
4. Department of Pediatrics, and Director, Arkansas Center for Birth Defects Research and Prevention, University of Arkansas for Medical Sciences, Little Rock, Arkansas.
5. University of Iowa, and Director, Iowa Registry for Congenital and Inherited Disorders, Iowa City, Iowa.
6. Public Policy Center, University of Iowa, Iowa City, Iowa.
7. National Foundation for Facial Reconstruction, New York, New York.