1. Oxford University Clinical Research Unit, Patan Academy of Health Sciences, Satdobato, Lagankhel Rd, Patan, Kathmandu, Nepal
2. Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Oxford University Clinical Research Unit, 764 Vo Van Kiet Street, Quan 5, Ho Chi Minh City, Vietnam
3. Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine and Research Building, Oxford University, Old Campus Road, Roosevelt Drive, Headington, Oxford, UK
4. Patan Academy of Health Sciences, Department of Paediatrics, Patan Hospital, Satdobato Lagankhel Rd, Patan, Kathmandu, Nepal
5. Department of Medicine, Addenbrookes Hospital, Box 157, Hills Road, Cambridge, UK