1. The Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
2. Children's Hospital 1, Ho Chi Minh City, Vietnam
3. Centre for Tropical Medicine, Nuffield Department of Clinical Medicine, Oxford University, Oxford, United Kingdom
4. Children's Hospital 2, Ho Chi Minh City, Vietnam
5. Khanh Hoa General Hospital, Khanh Hoa, Vietnam
6. Dong Thap General Hospital, Dong Thap, Vietnam
7. Dak Lak General Hospital, Dak Lak, Vietnam
8. Hue Central Hospital, Thua Thien Hue, Vietnam
9. Hospital for Tropical Diseases, Ho Chi Minh City, Vietnam
10. The London School of Hygiene and Tropical Medicine, London, United Kingdom