1. Suonenjoki Research Unit, Finnish Forest Research Institute, Suonenjoki, Finland.
2. Department of Biological and Environmental Science, University of Jyväskylä, Jyväskylä, Finland.
3. Vantaa Research Unit, Finnish Forest Research Institute, Vantaa, Finland.
4. Haartman Institute, University of Helsinki, Helsinki, Finland.
5. HUSLAB, Department of Virology and Immunology, Helsinki University Central Hospital, Helsinki, Finland.
6. Centre for Military Medicine, Finnish Defence Forces, Helsinki, Finland.
7. Department of Botany and Zoology, Masaryk University, Brno, Czech Republic.
8. Department of Veterinary Sciences, University of Helsinki, Helsinki, Finland.