1. Department of Pediatric Radiology, Children's Hospital Colorado, University of Colorado Denver, 13123 E 16th Ave, Mail Stop B125, Aurora, CO 80045.
2. Colorado Fetal Care Center, Denver, CO.
3. Rocky Vista University College of Osteopathic Medicine, Parker, CO.
4. Outcomes & Impact Service, Texas Children's Hospital, Houston, TX.
5. E. B. Singleton Department of Pediatric Radiology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX.
6. Texas Children's Fetal Center, Texas Children's Hospital, Houston, TX.