1. Department of Pediatric and Adolescent Surgery Clinical Center Klagenfurt Klagenfurt Austria
2. Safe Kids Austria, Carinthian Branch Klagenfurt Austria
3. Department of Pediatric and Adolescent Surgery, Medical University of Graz Graz Austria
4. Department of Trauma Surgery, Clinic Diakonissen Schladming Teaching Hospital of the Paracelsus Medical University Schladming Austria