1. Wellcome Trust Liverpool Glasgow Centre for Global Health Research, University of Liverpool, Liverpool, UK
2. Department of Pathology, Faculty of Health Sciences, Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, South Africa
3. Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow
4. Hairmyres Hospital, East Kilbride
5. Department of Respiratory Medicine, Glasgow Royal Infirmary, Glasgow
6. Department of Respiratory Medicine
7. Department of Infectious Diseases, The Queen Elizabeth University Hospital, Glasgow, Scotland, UK