1. Departments of Ear‐Nose‐Throat, Head and Neck Surgery Leuven Belgium
2. Department of Pediatric Gastroenterology & Nutrition University Hospitals Leuven Belgium
3. Leuven University Center for Informatics and Telematics LUDIT University of Leuven Belgium
4. Department of Ear‐Nose‐Throat Erasmus Medical Centre Rotterdam The Netherlands
5. Pediatric Gastroenterology, Hepatology & Nutrition, Antwerp Queen Paola Children's Hospital AZ Middelheim Belgium