1. Oxford University Clinical Research Unit, Hanoi, Vietnam
2. Princeton University, Princeton, USA
3. National Hospital for Tropical Diseases, Hanoi, Vietnam
4. Hanoi Medical University, Hanoi, Vietnam
5. MIVEGEC unit, IRD 224-CNRS 5290-University of Montpellier, France
6. Nuffield Department of Clinical Medicine, Centre for Tropical Medicine, University of Oxford, Oxford, UK
7. Department of Medical Microbiology, Radboudumc, Nijmegen, The Netherlands