1. Malawi-Liverpool-Wellcome Trust Clinical Research Programme
2. School of Tropical Medicine, University of Liverpool, Liverpool
3. Department of Medicine (RMH/WH), University of Melbourne, Melbourne, Victoria, Australia
4. Nuffield Department of Clinical Laboratory Sciences, The John Radcliffe Hospital, Oxford
5. Department of Histopathology, Kings College Hospital, London, United Kingdom
6. Department of Anthropology, University of Michigan, Ann Arbor, Michigan
7. Department of Obstetrics and Gynaecology, College of Medicine, University of Malawi, Blantyre, Malawi