1. Department of Paediatrics, Gastroenterology, Allergology & Paediatric Nutrition, Medical University of Gdańsk, 80-210 Gdańsk, Poland
2. Nutricia Polska Sp. z o.o., ul. Bobrowiecka 8, 00-728 Warsaw, Poland
3. EconMed Europe, Młynska 9/4, 31-469 Krakow, Poland
4. Faculty of Medicine and Health Sciences, Andrzej Frycz Modrzewski Krakow University, Gustawa Herlinga-Grudzinskiego 1, 30-705 Krakow, Poland