Author/Authors :
Łoś-Rycharska, Ewa Department of Pediatrics - Allergology and Gastroenterology - Collegium Medicum in Bydgoszcz - Nicolaus Copernicus University in Torun, Poland , Sterkowicz, Anna Department of Pediatrics - Allergology and Gastroenterology - Collegium Medicum in Bydgoszcz - Nicolaus Copernicus University in Torun, Poland , Romańczuk, Bartosz Department of Pediatrics - Allergology and Gastroenterology - Collegium Medicum in Bydgoszcz - Nicolaus Copernicus University in Torun, Poland , Czerwionka-Szaflarska, Mieczysława Department of Pediatrics - Allergology and Gastroenterology - Collegium Medicum in Bydgoszcz - Nicolaus Copernicus University in Torun, Poland