1. Department of Clinical Tropical Medicine , Faculty of Tropical Medicine, , Bangkok , Thailand
2. Mahidol University , Faculty of Tropical Medicine, , Bangkok , Thailand
3. Department of Viral Infections, Center for Infectious Disease Education and Research, Research Institute for Microbial Diseases, Osaka University , Osaka , Japan
4. Mahidol-Bangkok School of Tropical Medicine , Faculty of Tropical Medicine, , Bangkok , Thailand
5. Departamento de Urgencias, Hospital del Mar , Barcelona, Catalunya , Spain
6. Servicio de Unidad de Curas Intensivas, Hospital de Mataro, Mataro , Catalunya , Spain
7. Faculty of Tropical Medicine, Mahidol University, Thai Travel Clinic, Hospital for Tropical Diseases , Bangkok , Thailand
8. Department of Microbiology and Immunology , Faculty of Tropical Medicine, , Bangkok , Thailand
9. Tropical Medicine Diagnostic Reference Laboratory , Faculty of Tropical Medicine, , Bangkok , Thailand
10. Mahidol Oxford Research Unit , Faculty of Tropical Medicine, , Bangkok , Thailand