1 Edward B. Singleton Department of Radiology, Texas Children's Hospital, Baylor College of Medicine, Houston, Texas. Electronic address: vjsegher@texaschildrens.org.
2 Department of Radiology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts.
3 Department of Radiology, Children's Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
4 Department of Radiology, University of North Carolina School of Medicine, Chapel Hill, North Carolina.
5 Department of Radiology, Children's Hospital of Orange County, University of California-Irvine, Orange, California.
6 Edward B. Singleton Department of Radiology, Texas Children's Hospital, Baylor College of Medicine, Houston, Texas.
7 Department of Radiology and Medical Imaging, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio.
8 Department of Pediatric Radiology, Children's Hospital Colorado, University of Colorado School of Medicine, Aurora, Colorado.
9 Department of Radiology, Akron Children's Hospital, Akron, Ohio.