1. Department of Cardio-Thoracic and Vascular Medicine, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Via G. Massarenti, 9, 40138 Bologna, Italy
2. Adult Congenital Heart Centre and National Centre for Pulmonary Hypertension, Royal Brompton Hospital, London, UK
3. Congenital and Structural Cardiology University Hospitals Leuven, Leuven, Belgium
4. Department of Cardiovascular Sciences, Catholic University Leuven, Leuven, Belgium
5. Division of Maternal-Fetal Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
6. Department of Cardiology, Boston Children’s Hospital, Boston, MA, USA
7. Division of Cardiology, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
8. Department of Cardiology, Erasmus MC, Rotterdam, Netherlands