Children's of Alabama, Birmingham, Alabama, United States
Children's Hospital of Colorado, Aurora, Colorado, United States
Heart Center, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, United States
Children's National Hospital, Washington DC, District of Columbia, United States
The University of Mississippi Medical Center, Jackson, Mississippi, United States
University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States
The Johns Hopkins Hospital, Baltimore, Maryland, United States
Nicklaus Children's Hospital, Miami, Florida, United States
Seattle Children's Hospital, Seattle, Washington, United States
Washington University Children's Hospital, Saint Louis, Missouri, United States
Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, United States
Vanderbilt University Medical Center, Nashville, Tennessee, United States