1. Division of Paediatric Endocrinology and Diabetes, Department of Paediatrics, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
2. Transgenic Core Facility, Max Planck Institute of Molecular Cell Biology and Genetics, 01307 Dresden, Germany
3. Genome Engineering Facility, Max Planck Institute of Molecular Cell Biology and Genetics, 01307 Dresden, Germany
4. Division of Nephrology, Medizinische Klinik III, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
5. Institute of Clinical Chemistry and Laboratory Medicine, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
6. Steroid Research & Mass Spectrometry Unit, Paediatric Endocrinology and Diabetology, Center of Child and Adolescent Medicine, Justus Liebig Universität, 35392 Giessen, Germany
7. Medizinische Klinik und Poliklinik IV, LMU Klinikum München, 80336 Munich, Germany