1. Pathology Fimlab Laboratories Tampere Finland
2. Faculty of Medicine and Health Technology Tampere University Tampere Finland
3. Department of Otorhinolaryngology and Head and Neck Surgery First Faculty of Medicine University Hospital Motol Charles University Prague 5 Czech Republic
4. Department of Education and Research Hospital Nova of Central Finland Jyväskylä Finland
5. Department of Biology Faculty of Medicine in Pilsen Charles University Plzen Czech Republic
6. Department of Biological and Environmental Science University of Jyväskylä Jyväskylä Finland
7. Department of Pathology Central Finland Health Care District Jyväskylä Finland