1. Faculty of Environment and Resource Studies; Mahidol University; Nakorn Pathom Thailand
2. Conservation Genetics and Ecology Group; Institute of Molecular Biosciences; Mahidol University; Nakorn Pathom Thailand
3. Ecology Laboratory; Bioresources Technology Unit (Biotec); Science Park Klong Luang Pathum Thani Thailand
4. Primate Research Unit; Department of Biology; Faculty of Science; Chulalongkorn University; Bangkok Thailand
5. Department of Anthropology and Center for Ecology; Southern Illinois University; Carbondale IL U.S.A