1. Department of Immunotechnology Lund University Lund Sweden
2. Department of Medical Microbiology Lund University Lund Sweden
3. Department of Laboratory Medicine Lund University Lund Sweden
4. Department of Clinical Sciences, Division of Otorhinolaryngology Umeå University Umeå Sweden
5. Department of Otorhinolaryngology, Head and Neck Surgery Skåne University Hospital Lund Sweden