1. Faculty of Agriculture, Iwate University, Morioka, Iwate 020-8550, Japan
2. Department of Biology, Faculty of Science, Mahidol University, Rama 6 Road, Bangkok 10400, Thailand
3. Research and Education Centre for Natural Sciences, Keio University, Yokohama, Kanagawa 223-8521, Japan
4. Monnang Subdistrict Municipality, 111 Mu 6, Monnang, Phanat Nikhom, Chonburi 20140, Thailand
5. Conservation Ecology Program, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, Bangkhunthien, Bangkok 10150, Thailand
6. Veterinary Teaching Hospital, Faculty of Veterinary Medicine, Kasetsart University, Bangkok 10900, Thailand
7. Khlong Saeng Wildlife Research Station, Department of National Parks, Wildlife and Plants Conservation, P.O. Box 15, Khao Phang, Ban Tha Khun, Surat Thani 84230, Thailand
8. Furugen 74-10, Yomitansan, Okinawa 904-0314, Japan