1. Center for Health Services and Nursing Research, Katholieke Universiteit Leuven, Leuven, Belgium
2. Cardiac Center, Children’s Hospital of Philadelphia, Pennsylvania, USA
3. University of Pennsylvania, School of Nursing, Philadelphia, Pennsylvania, USA
4. University of California, Los Angeles, School of Nursing, Ahmanson/UCLA Adult Congenital Heart Disease Center, Los Angeles, California, USA
5. Toronto Congenital Cardiac Centre for Adults, University Health Network, Toronto General Hospital, Division of Cardiology, Toronto, Canada
6. Division of Congenital and Structural Cardiology, University Hospitals Leuven, Leuven, Belgium
7. The Heart Centre, Copenhagen University Hospital, Copenhagen, Denmark