1. Centre for Global Vaccine Research, Institute of Infection and Global Health, University of Liverpool, United Kingdom
2. Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre
3. Department of Medical Laboratory Sciences, College of Medicine, University of Malawi, Blantyre
4. International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
5. Department of Epidemiology of Microbial Diseases, Yale School of Public Health, Yale University, New Haven, Connecticut
6. Division of Infectious Diseases and International Health, University of Virginia, Charlottesville