1
Department of Paediatrics, Medical Centre for Postgraduate Education, Warsaw, Poland
2
President of the Polish Paediatric Society
3
Department of Paediatrics, Endocrinology and Paediatric Diabetology, Medical University of Rzeszów, Poland
4
Department of Pediatric Hematology and Oncology, Zabrze, Medical University of Silesia, Katowice, Poland
5
Department of Paediatric Allergology, Gastroenterology and Nutrition, Medical University of Łódź, Poland
6
Department of Pediatric Gastroenterology and Nutrition, Medical University of Warsaw, Poland
7
Department of Paediatric Endocrinology and Diabetology, Medical University of Lublin, Poland
8
Department and Clinic of Pediatric Nephrology, Wroclaw Medical University, Poland
9
Department of Pediatrics, Gastroenterology, Allergology and Nutrition, Medical University of Gdansk, Poland
10
Department of Paediatrics, Haematology and Oncology, A. Jurasz University Hospital No 1, Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland
11
Clinical Department of Paediatrics with Division of Allergology, Endocrinology, Neurology – Warsaw Children’s Hospital, Dziekanów Leśny, Poland
12
Department of Paediatric Bone Marrow Transplantation, Oncology and Haematology, Wrocław Medical University, Poland
13
Department of Cardiology, Children’s Memorial Health Institute, Warsaw, Poland
14
Department of Paediatrics, Oncology and Children’s Immunology, Pomeranian Medical University, Szczecin, Poland