1 Department of Gastroenterology, Hepatology and Nutrition, University Children's Hospital, University Medical Centre, Ljubljana, Slovenia.
2 Division of Gastroenterology and Nutrition and Children's Research Center, University Children's Hospital, Zurich, Switzerland.
3 Department of Paediatrics, University Hospital Motol, Prague, Czech Republic.
4 Department of Paediatrics, University of Granada, Granada, Spain.
5 Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden.
6 Newcastle Neonatal Service, Royal Victoria Infirmary, Newcastle, UK.
7 University Children's Hospital Zagreb, Zagreb, Croatia.
8 Erasmus MC, Sophia Children's Hospital, Rotterdam, The Netherlands.
9 Ospedale Pediatrico Giovanni XXIII University of Bari, Bari, Italy.
10 Paris Descartes University, APHP Necker-Enfants Malades hospital, Paris, France.
11 CNRC, Baylor College of Medicine, Houston, TX.
12 Department of Pediatrics, Helios Hospital, Pforzheim, Germany.
13 Department of Nutrition, Exercise and Sports, University of Copenhagen, Hans Christian Andersen Children Hospital, Odense University Hospital, Odense, Denmark.
14 Leeds Teaching Hospitals NHS Trust, Leeds, UK.
15 Childhood Nutrition Research Centre, UCL GOS Institute of Child Health, London, UK.