1. Department of Anesthesia Klinikum Klagenfurt Klagenfurt Austria
2. Department of Pediatric Surgery Medical University of Graz Graz Austria
3. Department of Statistics University of Klagenfurt Klagenfurt Austria
4. Department of Anatomy Medical University of Graz Graz Austria
5. Department of Neurorehabilitation Krankenhaus Hermagor Hermagor Austria
6. Institute of Pathophysiology Medical University of Graz Graz Austria