1. Department of Human Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania, at the time this research was conducted.
2. Center for Craniofacial and Dental Genetics, Department of Oral Biology, University of Pittsburgh, Pittsburgh, Pennsylvania.
3. Cleft-Craniofacial Center, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania.
4. Department of Health Management and Policy, University of Iowa, Iowa City, Iowa.
5. Department of Pediatric Plastic Surgery, and Professor of Otolaryngology and Director of the Cleft Lip and Palate Clinic, Children's Hospital of Colorado, Aurora, Colorado.
6. Foundation for the Community Control of Hereditary Diseases, Budapest, Hungary. He is currently retired.
7. Department of Pediatrics, University of Texas Medical School at Houston, Houston, Texas.
8. Department of Oral Biology, Department of Human Genetics, the Clinical and Translational Science Institute and University of Pittsburgh, Pittsburgh, Pennsylvania.
9. Center for Craniofacial and Dental Genetics, Department of Oral Biology and the Department of Anthropology, University of Pittsburgh, Pittsburgh, Pennsylvania.