1. Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool, UK
2. Department of Infectious Diseases, University Hospital of Wales, Cardiff and Vale University Health Board, UK
3. Department of Intensive Care, University College London Hospital, ULCH NHS Trust, London, UK
4. Department of Infectious Diseases, Chelsea and Westminster Hospital, Imperial NHS Trust, London, UK
5. Faculty of Medicine, Imperial College London, London, UK
6. Oxford University Clinical Academic Graduate School, University of Oxford, Oxford, UK