1. Department of Epidemiology, Human Genetics, and Environmental Science UTHealth School of Public Health Austin Texas USA
2. Birth Defects Epidemiology and Surveillance Branch Texas Department of State Health Services Austin Texas USA
3. Baylor College of Medicine Houston Texas USA
4. Department of Epidemiology, Human Genetics, and Environmental Science UTHealth School of Public Health Houston Texas USA
5. Department of Epidemiology, Fay W Boozman College of Public Health University of Arkansas for Medical Sciences Little Rock Arkansas USA