1 Rowley Bristow Unit, Trauma & Orthopaedics, Ashford and St Peter's Hospitals National Health Service (NHS) Foundation Trust, Lyne, Chertsey, UK; Smart Health Centre, University of East London, London E16 2RD, UK. Electronic address: M.Imam1@nhs.net.
2 Smart Health Centre, University of East London, London E16 2RD, UK.
3 Royal Bolton Hospital, Bolton NHS Foundation Trust, Bolton, Greater Manchester, UK.
4 Department of Infection, Centre for Clinical Microbiology, Division of Infection and Immunity, University College London, London WC1B4HA, UK.
5 Department of Infection, Centre for Clinical Microbiology, Division of Infection and Immunity, University College London, London WC1B4HA, UK; National Institute for Health Care Research (NIHR) Biomedical Research Centre, University College London Hospitals NHS Foundation Trust, London, UK. Electronic address: a.i.zumla@gmail.com.