1. Division of Cardiology; Pediatric Heart Center, University Children's Hospital Zurich; Zurich Switzerland
2. Children's Research Center, University Children's Hospital Zurich; Zurich Switzerland
3. Department of Gynecology and Obstetrics; Paracelsus Medical University Salzburg; Salzburg Austria
4. Department of Cardiology; University Hospital Zurich; Zurich Switzerland
5. Department of Diagnostic Imaging; University Children's Hospital Zurich; Zurich Switzerland