Head of the Unit for Pediatric Gastroenterology and Nutrition in 1987 and created the Pediatric Hospital, the "KidZ Health Castle," at the Univerity Hospital Brussels (UZ Brussel)
Medical studies at the Vrije Universiteit Brussel and trained in pediatrics (1981-1986) at the same university
Defended his Ph.D. thesis on "Esophageal pH monitoring for Gastro-Esophageal Reflux in Infants and Children" in 1991
Founder and current consultant at "KidZ Health Castle", at the University Hospital Brussels (UZ Brussel) of the Vrije Universiteit Brussel
Chair of Pediatrics at the same Institution from 1994 to 2021
Associate editor of Nutrients
Main interests are functional gastrointestinal disorders such as gastroesophageal reflux, colic and constipation, infant nutrition, focusing on probiotics, prebiotics, and cow's milk protein allergy
Authored over 500 publications listed in Pubmed and presented over 1000 talks at diverse international meetings