1. Department of Pediatric Surgery, National Institute of Children’s Diseases, 83340 Bratislava, Slovakia
2. Division of General Thoracic Surgery, Bern University Hospital (Inselspital), 3010 Bern, Switzerland
3. Institute of Medical Physics and Biophysics, Comenius University, 81372 Bratislava, Slovakia
4. Department of Pediatric Surgery, Children’s Hospital of Eastern Switzerland, 9000 St. Gallen, Switzerland