1. Department of Congenital Heart Disease; Glenfield Hospital, University Hospitals of Leicester; Leicester United Kingdom
2. Department of Congenital Heart Disease; University Hospitals of Bristol; Bristol United Kingdom
3. Department of Congenital Heart Disease; University of Southampton NHS Foundation Trust; United Kingdom
4. Department of Paediatric Cardiology; Gaziantep University Medical Faculty; Gaziantep Turkey
5. Department of Paediatric Cardiology; Gregorio Maranon General University Hospital; Madrid Spain
6. Department of Paediatric Cardiology and Paediatric Intensive Care; Ludwig Maximilians University Munich; Germany
7. Department of Congenital Heart Disease; Sheikh Khalifa Medical City; Abu Dhabi United Arab Emirates