1. Group of Biomedical Sciences, University Hospital Leuven, Leuven, Belgium
2. Department of General and Endocrine Surgery, Onze-Lieve-Vrouw (OLV) Clinic Aalst, Aalst, Belgium
3. Centre for Translational Microbiome Research Department of Microbiology, Tumour and Cell Biology, Karolinska Institutet, Karolinska Hospital, Stockholm, Sweden
4. Department of Head and Skin, University Hospital Ghent, Ghent, Belgium
5. Department of Plastic and Reconstructive Surgery, University Hospital Ghent, Ghent, Belgium
6. Department of General Surgery, AZ Damiaan, Ostend, Belgium