1. Centre for Overweight Adolescent and Children's Healthcare (COACH) Maastricht University Medical Centre+, MosaKids Children's Hospital Maastricht Netherlands
2. Department of Pediatrics Maastricht University Medical Centre+, MosaKids Children's Hospital Maastricht The Netherlands
3. School of Nutrition and Translational Research (NUTRIM) Maastricht University Maastricht Netherlands
4. Department of Gastroenterology The Children's Memorial Health Institute Warsaw Poland
5. Department of Pediatric Gastroenterology SI “Institute Gastroenterology of the National Academy of Medical Sciences” Dnipro Ukraine
6. Department of Pediatric Gastroenterology “Dana‐Dwek” Children's Hospital, Tel Aviv Sourasky Medical Center, affiliated with the Faculty of Medicine, Tel Aviv University Tel Aviv Israel