1. Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden
2. Institute for Global Health, University College London, London, UK
3. Malawi Epidemiology and Intervention Research Unit (Meiru), Lilongwe, Malawi
4. Parent and Child Health Initiative, Lilongwe, Malawi
5. Department of Paediatrics, College of Medicine, Blantyre, Malawi
6. Department of International Public Health, Liverpool School of Tropical Medicine & Behaviour and Health Group, Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyren, Malawi
7. Acute Respiratory Infections Unit, Ministry of Health, Lilongwe, Malawi
8. Astrid Lindgren Children’s Hospital, Karolinska University Hospital, Stockholm, Sweden
9. Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden