1. National Institute for Medical Research, Mwanza Centre Mwanza, Tanzania
2. National Institute for Medical Research, Muhimbili Centre Dar es Salaam, Tanzania
3. Department of Human Nutrition, Faculty of Life Sciences, University of Copenhagen, 1958 Frederiksberg, Denmark
4. Department of Infectious Diseases, Rigshospitalet, University of Copenhagen, 2100 Copenhagen, Denmark
5. The Gade Institute, Section for Microbiology and Immunology, University of Bergen and Haukeland University Hospital, Bergen-5020, Norway
6. DBL-Centre for Health Research and Development, Department of Veterinary Disease Biology, Faculty of Life Sciences, University of Copenhagen, 1958 Frederiksberg, Denmark