1. Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
2. Collaborative Clinical Research Branch, Division of Clinical Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
3. Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
4. Mahidol Oxford Tropical Research Unit, Bangkok, Thailand
5. Blood Systems Research Institute, San Francisco, California, USA
6. Department of Laboratory Medicine, University of California, San Francisco, California, USA
7. Hospital for Tropical Diseases, Ho Chi Minh City, Vietnam