1. University Leipzig-Heart Center Leipzig; Department of Cardiology; Leipzig Germany
2. Takasaki General Medical Center; Division of Cardiology; Takasaki Japan
3. Gunma University School of Medicine; Department of Cardiology; Maebashi Japan
4. University Leipzig; Department of Pediatric Surgery; Leipzig Germany
5. Cincinnati Children's Hospital Medical Center; Division of Pediatric General and Thoracic Surgery; Cincinnati USA
6. University Medical Center Ulm; Division of Pediatric Endocrinology and Diabetes; Ulm Germany
7. Ernst-Moritz-Arndt-University Greifswald; Interfaculty Institute for Genetics and Functional Genomics; Department of Functional Genomics; Greifswald Germany
8. Obesity Center INSULA; Bischofswiesen Germany