1. Department of Biology; University of Eastern Finland; PO Box 111 FI-80101 Joensuu Finland
2. Metsähallitus, Parks & Wildlife Finland; Akselinkatu 8 FI-57130 Savonlinna Finland
3. Natural Resources Institute Finland; Itäinen Pitkäkatu 3 FI-20520 Turku Finland
4. Finnish Food Safety Authority Evira; Production Animal and Wildlife Health Research Unit; Elektroniikkatie 3 FI-90590 Oulu Finland