1. Division of Metabolism and Children's Research Center University Children's Hospital Zurich Zurich Switzerland
2. Division of Pediatric Endocrinology, Diabetology and Metabolism and University Institute of Clinical Chemistry, Inselspital, University Hospital University of Bern Bern Switzerland
3. AMSM, Department of Biomedical Research University of Bern Bern Switzerland
4. AMSM, Department of Radiology University of Bern Bern Switzerland
5. Graduate School for Cellular and Biomedical Sciences University of Bern Bern Switzerland
6. Service of Clinical Chemistry Lausanne University Hospital and University of Lausanne Switzerland