1. Southern Swedish Forest Research Centre, SLU Forest Damage Centre, Swedish University of Agricultural Sciences, Sundsvägen 3, 23422 Alnarp, Sweden
2. Institute of Forestry and Park Gardening, Ukrainian National Forestry University, Pryrodna 19, 79057 Lviv, Ukraine
3. Department of Forest Mycology and Plant Pathology, Uppsala BioCenter, SLU Forest Damage Centre, Swedish University of Agricultural Sciences, P.O. Box 7026, 75007 Uppsala, Sweden