1. Department of Agriculture, Graduate School of Science and Technology, Shinshu University
2. Länsstyrelsen i Västmanlands län
3. Faculty of Agriculture, Shinshu University
4. Forest Research and Management Organization
5. Biodiversity Division, National Institute for Environmental studies
6. Department of Forest Science, University of Helsinki
7. Ibaraki Prefectural Forestry Research Institute
8. Ministry of Industry and Technology, Izmir Branch
9. Natural History Museum and Institute
10. Forest Products Research Institute, Hokkaido Research Organization
11. Shizuoka University
12. Iwate Prefectural Forest Technology Center
13. Graduate School of Agricultural and Life Sciences, The University of Tokyo
14. National Institute of Forest Science
15. Kunming Institute of Botany, Chinese Academy of Sciences
16. Tohoku Research Center, Forest Research and Management Organization