1. Department of Epidemiology College of Public Health, The University of Iowa Iowa City Iowa USA
2. Department of Epidemiology, Human Genetics, and Environmental Science University of Texas School of Public Health in Austin Austin Texas USA
3. Division of Medical Genetics, Department of Pediatrics University of Utah School of Medicine Salt Lake City Utah USA
4. New York State Department of Health Bureau of Environmental and Occupational Epidemiology Albany New York USA
5. Department of Biostatistics College of Public Health, University of Iowa Iowa City Iowa USA
6. Division of Medical Genetics and Genomics, The Stead Family Department of Pediatrics University of Iowa Hospitals and Clinics Iowa City Iowa USA
7. Division of Pediatric Cardiology, The Stead Family Department of Pediatrics University of Iowa Hospitals and Clinics Iowa City Iowa USA
8. Department of Epidemiology Emory University Rollins School of Public Health Atlanta Georgia USA
9. Department of Neurology Boston Children's Hospital Boston Massachusetts USA
10. Environmental and Occupational Medicine and Epidemiology Program, Department of Environmental Health Harvard T.H. Chan School of Public Health Boston Massachusetts USA