University of Yaounde 1, Government of Cameroon - Ministry of Public Health Cameroon, National AIDS Control Committee, Cameroon, University of Toulouse 3, Paul Sabatier University, Zvitambo Institute for Maternal and Child Health Research, Queen Mary University of London and University of Toulouse 3, Paul Sabatier University

Queen Mary University of London, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Ministry of Health and Child Care, Ministry of Health and Child Care, Ministry of Health and Child Care, Zvitambo Institute for Maternal and Child Health Research, University of Liverpool, University College London - Population, Policy and Practice Research and Teaching Department, London School of Hygiene & Tropical Medicine, Johns Hopkins University - Department of International Health, Queen Mary University of London, Johns Hopkins University - Department of International Health, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research and Queen Mary University of London

Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Departments of Pediatrics and Microbiology & Molecular Genetics, Vaccine Testing Center, Larner College of Medicine, University of Vermont, Microbiology & Molecular Genetics, Vaccine Testing Center, Larner College of Medicine, University of Vermont, Department of Metabolism, Digestion and Reproduction, Division of Digestive Diseases, Faculty of Medicine, Imperial College London, Department of Metabolism, Digestion and Reproduction, Division of Digestive Diseases, Faculty of Medicine, Imperial College London, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Cincinnati Children's Hospital Medical Center - Division of Infectious Diseases, Zvitambo Institute for Maternal and Child Health Research, Zvitambo Institute for Maternal and Child Health Research, Imperial College London - Department of Metabolism, Digestion and Reproduction, Johns Hopkins University - Bloomberg School of Public Health, University of Vermont - Department of Microbiology and Molecular Genetics, Johns Hopkins University - Department of International Health and Queen Mary University of London