1. School of Nursing, University of Minnesota, Minneapolis, Minnesota, USA.
2. School of Nursing, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
3. Center for Pediatric Nursing Research and Evidence Based Practice, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.
4. Divisions of Epidemiology and School of Public Health, University of Minnesota, Minneapolis, Minnesota, USA.
5. Divisions of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, Minnesota, USA.
6. Department of Pediatrics, University of Minnesota Medical School, Minneapolis, Minnesota, USA.
7. Department of Pediatric Cardiology, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis, Minnesota, USA.
8. Division of Cardiac Surgery, University of Michigan Medical School, Ann Arbor, Michigan, USA.
9. Department of Cardiac Surgery and Pediatrics (Cardiology), C. S. Mott Children's Hospital, Ann Arbor, Michigan, USA.