1. Institute of Vertebrate Biology, AS CR, Brno, Czech Republic.
2. National Institute of Public Health, Prague and National Reference Laboratory for Monitoring of Environmental Biotic Factors, Brno, Czech Republic.
3. Institut of Forest Ecology, Mendel University of Agriculture and Forestry, Brno, Czech Republic.
4. Faculty of Science, Palacky University Olomouc, Czech Republic.