1. Allergy and Clinical Immunology Research Group KU Leuven Leuven Belgium
2. Clinical Division of Paediatrics UZ Leuven Leuven Belgium
3. Flemish Swimming Federation Merelbeke Belgium
4. Academic Centre for General Practitioners KU Leuven Leuven Belgium
5. Sports Doctor's Practice Wilrijk Belgium
6. Sport Medical Advice Centre UZ Leuven Leuven Belgium
7. Pediatrics Jessa Hospital Hasselt Hasselt Belgium
8. Pediatric Allergy AZ Maria Middelares Gent Ghent Belgium
9. Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE) KU Leuven Leuven Belgium
10. Clinical Division of Respiratory Medicine UZ Leuven Leuven Belgium