1. Division of Environment and Natural Resources Norwegian Institute of Bioeconomy Research (NIBIO) Grimstad 4886 Norway
2. Mycology & Nematology Genetic Diversity and Biology Lab USDA Agricultural Research Service Beltsville MD 20705 USA
3. Asbjørn Nyholt ApS Nyborg 5800 Denmark
4. Botaniska Analysgruppen Göteborg 41319 Sweden
5. The Turf Disease Centre Hampshire RG26 5AG UK
6. Norwegian Institute of Bioeconomy Research Ås 1433 Norway
7. Division of Biotechnology and Plant Health Norwegian Institute of Bioeconomy Research (NIBIO) Ås 1433 Norway
8. Dep. of Plant Sciences Norwegian Univ. of Life Sciences (NMBU) Ås 1433 Norway