1. Department of Obstetrics and Prenatal Medicine, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany
2. Department of Cardiology, German Paediatric Heart Centre, University of Bonn, Venusberg-Campus 1, 53127 Bonn, Germany
3. Clinic for Cardiology, ‘Kardio Bonn’, Baumschulallee 1, 53115 Bonn, Germany
4. Department of Cardiology and Pulmonology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany
5. Section of Pediatric Pathology, Department of Pathology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany