Authors
DOROTA ROSZAK
First Department of Pediatrics; Department of Pediatric Gastroenterology and Metabolic Diseases, Poznan University of Medical Sciences, Poznan, Poland
MIROSŁAWA GAŁĘCKA
Institute of Microecology, Poznan, Poland
WOJCIECH CICHY
First Department of Pediatrics; Department of Pediatric Gastroenterology and Metabolic Diseases, Poznan University of Medical Sciences, Poznan, Poland