1. Department of Paediatric Cardiology, Kepler University Hospital GmbH, Krankenhausstrasse 26-30, 4020 Linz, Austria
2. Faculty of Medicine, Johannes Kepler University Linz, Altenbergerstrasse 68, 4040 Linz, Austria
3. Department of Paediatrics and Adolescent Medicine, Kepler University Hospital GmbH, Krankenhausstrasse 26-30, 4020 Linz, Austria