1. Division of Infectious Diseases, Inflammation Center, Helsinki University Hospital, Helsinki, Finland
2. Department of Otorhinolaryngology-Head and Neck Center, Helsinki University Hospital, Helsinki, Finland
3. Diagnostic Center, Clinical Microbiology, HUSLAB, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
4. Division of Respiratory Diseases, Heart and Lung Center, Helsinki University Hospital, Helsinki, Finland
5. Department of Medicine, Clinicum, University of Helsinki, Helsinki, Finland
6. Department of Anesthesiology, Intensive Care and Pain Medicine, Division of Intensive Care Medicine, Helsinki University Hospital, Helsinki, Finland
7. Helsinki University Hospital and University of Helsinki, Helsinki, Finland
8. General Administration, Helsinki University Hospital, Helsinki, Finland