1. Pediatrics and Adolescents Medicine, Faculty of Medicine, University of Augsburg, 86156 Augsburg, Germany
2. Pediatric Hematology/Oncology, Department of Pediatrics, Otto von Guericke University Children’s Hospital, 39106 Magdeburg, Germany
3. Department of Paediatric Surgery and Paediatric Urology, University Children’s Hospital Tuebingen, 72076 Tuebingen, Germany
4. Department of Pediatric Surgery and Urology, University Hospital Giessen-Marburg, 35043 Marburg, Germany
5. Division of Paediatric Endocrinology and Diabetes, Department of Paediatrics, University Hospital Schleswig-Holstein, Christian-Albrechts-University Kiel, 24105 Kiel, Germany
6. Paediatric Endocrinology & Diabetology, Steroid Research & Mass Spectrometry Unit, Centre of Child and Adolescent Medicine, Justus Liebig University, 35392 Giessen, Germany
7. Section of Pediatric Pathology, Institute of Pathology, University of Bonn, 53127 Bonn, Germany