1
Department of Pediatric Surgery and Organ Transplantation, The Children’s
Memorial Health Institute, Warsaw, Poland
2
Department of Pathology, The Children’s Memorial Health Institute, Warsaw, Poland
3
Department of Pediatric Surgery, Jagiellonian University Medical College, Krakow,
Poland
4
Department of Pediatric Surgery and Oncology, Central Clinical Hospital Medical
University of Lodz, Lodz, Poland
5
Department of Pediatric Surgery, Urology and Traumatology, Wladyslaw Buszkowski
Children’s Hospital, Kielce, Poland
6
Department of Pediatric Surgery and Traumatology, Provincial Hospital, Tarnobrzeg, Poland
7
Department of Pediatric and Oncological Surgery, Urology and Hand Surgery,
Pomeranian Medical University, Szczecin, Poland
8
Department of Children’s Developmental Defects Surgery and Traumatology,
Medical University of Silesia in Katowice, Zabrze, Poland
9
Department of Pediatric Surgery, University Clinical Hospital, Opole, Poland
10
Department of Pediatric Surgery and Urology, Medical University of Lodz, Lodz, Poland
11
Department of Urology and Pediatric Surgery, The Ludwik Rydygier Provincial
Polyclinic Hospital, Torun, Poland
12
Department of Pediatric Surgery and Urology, Karol Marcinkowski University
Hospital, Zielona Gora, Poland
13
Department of Pediatric Surgery and Traumatology, ZZOZ, Ostrow Wielkopolski, Poland
14
Department of Pediatric Surgery and Urology, The Autonomous Public Children’s
Clinic Hospital of the Medical University of Warsaw, Warsaw, Poland
15
Department of Pediatric Surgery, Hospital Municipal St. John Paul II, Elblag, Poland
16
Department of Pediatric Oncology, The Children’s Memorial Health Institute,
Warsaw, Poland
17
Department of Pediatric Surgery and Organ Transplantation, The Children’s
Memorial Health Institute, Warsaw, Poland