1. KU Leuven, Department of Microbiology, Immunology and Transplantation, Allergy and Clinical Immunology Research Group, Leuven, Belgium.
2. Department of Bioscience Engineering, Research Group Environmental Ecology and Applied Microbiology, University of Antwerp, Antwerp, Belgium.
3. Laboratory of Pharmaceutical Technology and Biopharmacy, Department of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Antwerp, Belgium.
4. KU Leuven, Department of Chronic Diseases, Metabolism, and Aging (ChroMeTa), Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven, Belgium.
5. ENT, Head and Neck Surgery and Communication Disorders, Antwerp University Hospital, Edegem, Belgium.
6. Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.
7. University Hospitals Leuven Clinical Division of Ear, Nose and Throat Disease, Leuven, Belgium.
8. Department of Otorhinolaryngology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
9. Department of Otorhinolaryngology, Ghent University Hospital, Ghent, Belgium.