1. Biophysics Group, Department of Physics, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
2. Division of Innovation and Research, Department of Disease Control, Ministry of Public Health, Nonthaburi 11000, Thailand
3. Department of Microbiology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
4. Centre of Excellence in Mathematics, CHE, Ministry of Education, Bangkok 10400, Thailand