1. Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
2. Forestry Division, Japan International Research Center for Agricultural Sciences, Tsukuba, Ibaraki, Japan
3. Department of Biology, Faculty of Science, Kyushu University, Fukuoka, Japan
4. Forestry Biotechnology Division, Forest Research Institute Malaysia, Selangor, Malaysia
5. Department of Tourism Science, Tokyo Metropolitan University, Tokyo, Japan
6. Shikoku Research Center, Forestry Research and Management Organization, Kochi, Japan
7. Bio-Resources and Utilization Division, Japan International Research Center for Agricultural Sciences, Tsukuba, Ibaraki, Japan
8. Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan