1. Department of Paediatric and Adolescent Surgery, Medical University of Graz, Graz, Austria
2. Department of Radiology, Division of Pediatric Radiology, Medical University of Graz, Graz, Styria, Austria
3. Department of Paediatrics and Adolescent Medicine, Medical University of Graz, Graz, Austria
4. Institute of Pathology, Medical University of Graz, Graz, Austria