1. Department of Microbiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.
2. Department of Microbiology, Faculty of Science, Mahidol University, Bangkok, Thailand.
3. National Blood Centre, Thai Red Cross Society, Bangkok, Thailand.
4. Medical Biotechnology Research Unit, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Bangkok, Thailand.
5. Dengue Hemorrhagic Fever Research Unit, Office of Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.