1. Department of Pediatric Surgery, Traumatology and Urology, Poznan University of Medical Sciences, Poland
2. Institute of Human Genetics, Polish Academy of Sciences, Poznan, Poland
3. Karol Jonscher Hospital, Poznan, Poland
4. Student Scientific Group of Pediatric Surgery, Poznan University of Medical Sciences, Poland
5. Department of Pediatric Surgery, Poznan University of Medical Sciences, Poland
6. Department of Pediatric Oncology, Hematology and Transplantology, Poznan University of Medical Sciences, Poland