1 Division of Neonatology, Department of Pediatrics and Adolescent Medicine, Medical University of Graz, Graz, Austria.
2 Division of Pediatric Cardiology, Department of Pediatrics and Adolescent Medicine, Medical University of Graz, Graz, Austria.
3 Department of Pediatric Cardiology, Charité-Universitätsmedizin Berlin, Berlin, Germany.
4 Department of Pediatrics - Neonatology and Pediatric Cardiology, Cambridge University Hospitals NHS Foundation Trust and University of Cambridge School of Clinical Medicine, Cambridge, United Kingdom.
5 Department of Pediatrics - Division of Neonatology, Loma Linda University Children's Hospital and Loma Linda University School of Medicine, Loma Linda, CA, United States.