1. Centre for Translational Microbiome Research, Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
2. Department of Clinical Sciences, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
3. Department of Ear, Nose and Throat (ENT), Karolinska University Hospital, Stockholm, Sweden
4. ENT Unit, Research Laboratory, Sophiahemmet University, Stockholm, Sweden
5. Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden
6. Department of Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden