1. Hospital for Tropical Diseases, Ho Chi Minh City, Vietnam;
2. Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Ho Chi Minh City, Vietnam;
3. Centre for Tropical Medicine and Global Health, University of Oxford, Oxford, United Kingdom;
4. University of Medicine and Pharmacy, Ho Chi Minh City, Vietnam;
5. Guy’s and St. Thomas’ Hospitals NHS Trust, London, United Kingdom;
6. Mahidol Oxford Research Unit, Bangkok, Thailand