1. Department of Pediatrics, Monroe Carell Jr Children’s Hospital at Vanderbilt and Vanderbilt University Medical Center, Nashville, Tennessee
2. Children’s Hospital Association, Lenexa, Kansas
3. Department of Pediatrics and Emergency Medicine, George Washington University School of Medicine and Health Sciences, Washington, District of Columbia
4. Department of Pediatrics, Nationwide Children's Hospital, The Ohio State University College of Medicine, Columbus, Ohio