1. Department of Epidemiology, Human Genetics, and Environmental Sciences UTHealth School of Public Health Houston Texas USA
2. Department of Pediatrics, Division of Genetics and Metabolism University of Texas Southwestern Medical Center Dallas Texas USA
3. Department of Epidemiology, Human Genetics, and Environmental Sciences UTHealth School of Public Health at Austin Austin Texas USA
4. Birth Defects Epidemiology and Surveillance Branch Texas Department of State Health Services Austin Texas USA
5. Department of Genetics Cook Children's Hospital Fort Worth Texas USA