1. Congenital Heart Center, College of Medicine
2. Department of Physical Therapy, College of Public Health and Health Professions, University of Florida, Gainesville, Florida
3. Health Science Center Jacksonville, Jacksonville, Florida
4. Nemours Biomedical Research, Alfred I. DuPont Hospital for Children, Wilmington, Delaware
5. Department of Cardiology, Children's Hospital Boston, Boston, Massachusetts
6. Division of Pediatric Cardiology, School of Medicine, Johns Hopkins University, Baltimore, Maryland