1. University of Maryland School of Medicine, Baltimore, Maryland, USA
2. Oxford University Clinical Research Unit, Patan Academy of Health Sciences, Kathmandu, Nepal
3. Infectious Diseases Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
4. Malawi-Liverpool Wellcome Trust Clinical Research Programme, Blantyre, Malawi
5. Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
6. Oxford Vaccine Group, Department of Paediatrics, University of Oxford, Oxford, United Kingdom
7. National Institute for Health Research Oxford Biomedical Research Centre, Oxford, United Kingdom