Arbejdede dernæst en kort periode inden for medicinalindustrien 1986- 1987, indtil han vendte tilbage til en klinisk stilling ved Dronning Fabiolas Universitetshospital for Børn i Bruxelles som leder af afdelingen for ernæring og farmakodynamik, en stilling, han stadig beklæder.
He moved briefly to the pharmaceutical industry from 1986 to 1987, before returning to clinical work at the Queen Fabiola Children’ s University Hospital in Brussels as head of the nutrition and pharmacodynamics unit, a post he continues to hold today.