1. University Hospitals of Morecambe Bay NHS Foundation Trust, Lancaster, UK
2. Department of Speech, Voice and Swallowing, Wythenshawe Hospital, Wythenshawe, UK
3. Manchester University NHS Foundation Trust, Manchester, UK
4. Acute Intensive Care Unit, Wythenshawe Hospital, Wythenshawe, UK
5. The University of Manchester Medical School, Manchester, UK
6. Manchester Academic Critical Care, Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester, UK