Nuffield Department of Medicine, Oxford, United Kingdom
Soweto Clinical Trials Centre, Johannesburg, Gauteng, South Africa
PHRU Kliptown, Johannesburg, Gauteng, South Africa
Setshaba Research Centre (SRC), Soshanguve, Gauteng, South Africa
Hospital Universitario "Dr. José Eleuterio González" de la Universidad Autónoma de Nuevo León., Monterrey, Nuevo León, Mexico
University of Oxford, Oxford, United Kingdom
Oxford Respiratory Trials Unit, Oxford, Oxfordshire, United Kingdom
University Hospital Southampton NHS Foundation Trust, Southampton, Hampshire, United Kingdom
University College London Hospitals NHS Foundation Trust, London, United Kingdom
John Radcliffe Hospital, Oxford, United Kingdom
University of Oxford, Oxford, Oxfordshire, United Kingdom
Imperial College, London, United Kingdom
Horton General Hospital, Banbury, Oxfordshire, United Kingdom
John Radcliffe Hospital, Oxford, Oxfordshire, United Kingdom
Ninewells Hospital, Dundee, Scotland, United Kingdom
Oxford University Clinical Research Unit, Centre for Tropical Medicine, Ho Chi Minh City, Vietnam
Kumasi Center for Collaborative Research in Tropical Medicine KNUST, Kumasi, Ghana
Indian Council of Medical Research, Division of Epidemiology and Communicable Diseases, New Delhi, India