1. Otorhinolaryngology-Head and Neck Surgery; University of Helsinki and Helsinki University Hospital; Helsinki Finland
2. Medicine; University of Helsinki and Helsinki University Hospital; Helsinki Finland
3. ORTON Research Institute; Helsinki Finland
4. ORTON Orthopedic Hospital; Helsinki Finland
5. Rheumatology; University of Helsinki and Helsinki University Hospital; Helsinki Finland
6. Clinical Microbiology; IIS-Fundación Jiménez Díaz Madrid Spain