1
Department of Pediatric Hematology and Oncology, Collegium Medicum Nicolaus Copernicus University Toruń, Jurasz University Hospital, Bydgoszcz, Poland
2
Department of Pediatric Hematology and Oncology, Clinical Transplantology and Pediatrics; Medical University of Warsaw, Warszawa, Poland
3
Department of Pediatrics, Oncology and Hematology, Medical University of Łódź, Łódź, Poland
4
Department of Pediatric Oncology and Hematology, Institute of Pediatrics, Jagiellonian University Medical College, Kraków, Poland
5
Department of Oncology and Surgical Oncology for Children and Youth, Institute of Mother and Child, Warszawa, Poland
6
Department of Oncology, Hematology and Chemotherapy, Division of Pediatrics, Medical University of Silesia, Upper Silesian Child Health Centre, Katowice, Poland
7
Department of Pediatrics and Hematology and Oncology, Provincial Children’s Hospital, Olsztyn, Poland
8
Department of Pediatric Hematology and Oncology and Transplantology, Medical University of Lublin, Lublin, Poland
9
Department of Pediatric Hematology/Oncology and BMT, Medical University of Wrocław, Wrocław, Poland
10
Department of Pediatrics, Institute of Medical Sciences, Collegium Medicum, University of Rzeszów, Rzeszów, Poland
11
Department of Pediatrics, Hematology and Oncology, Medical University of Gdańsk, Gdańsk, Poland
12
Department of Pediatric Oncology and Hematology, Children’s Hospital in Kielce, Kielce, Poland
13
Department of Pediatric Oncology, Hematology and Transplantology, Poznań University of Medical Sciences, Poznań, Poland