1. Forestry Complex, Faculty of Science and Natural Resources, Universiti Malaysia Sabah, Jalan UMS, 88400 Kota Kinabalu, Sabah, Malaysia
2. Universiti Teknologi MARA (UiTM) Sabah, Locked Bag 71, 88997 Kota Kinabalu, Sabah, Malaysia
3. Faculty of Forest Science, National University of Laos, Vientiane, Lao PDR