1. aDepartment of Pediatrics and International Pediatrics, Norton Children’s Neonatology Affiliated with University of Louisville School of Medicine, Louisville, Kentucky
2. bDepartment of Pediatrics and Child Health, Max Rady College of Medicine, University of Manitoba-Canada, Health Sciences Centre-Winnipeg, Winnipeg, Manitoba, Canada
3. cDepartment of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
4. dDepartments of Radiology and Pediatrics, University of Cincinnati College of Medicine, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio
5. eDepartments of Radiology and Pediatrics, University of Colorado School of Medicine, Children’s Hospital Colorado, Vascular Anomalies Center, Aurora, Colorado
6. fDepartments of Radiology and Pediatrics, University of Colorado School of Medicine, Children’s Hospital Colorado, Aurora, Colorado