1. National Institute for Health Research Royal Liverpool & Broadgreen Clinical Research Facility, Liverpool University Hospital NHS Foundation Trust , Liverpool , United Kingdom
2. Department of Pharmacology & Therapeutics, University of Liverpool , Liverpool , United Kingdom
3. Department of Clinical Sciences, Liverpool School of Tropical Medicine , Liverpool , United Kingdom
4. Ridgeback Biotherapeutics , Miami, Florida , USA
5. National Institute for Health Research Southampton Clinical Trials Unit, University of Southampton , Southampton , United Kingdom