?:authorAffiliation
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[\'Department of Organization and Management in Health Care, Poznan University of Medical Sciences, Przybyszewskiego 39, 60-356 Poznań, Poland.\', \'Department of Pediatrics, Rheumatology, Immunology and Metabolic Bone Diseases, Medical University of Bialystok, 15-274 Białystok, Poland.\', \'Research and Development Center, Regional Specialist Hospital, 51-124 Wrocław, Poland.\', \'Department of Pediatric Gastroenterology and Metabolic Diseases, Poznan University of Medical Sciences, 60-572 Poznań, Poland.\', \'University Children\'s Hospital, Jagiellonian University, 30-663 Krakow, Poland.\', \'Department of Pediatrics, Hematology and Oncology, Medical University of Gdansk, 80-210 Gdansk, Poland.\', \'Voivodship Children Hospital, 85-667 Bydgoszcz, Poland.\']
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