1. Critical Care Research Group, Adult Intensive Care Services, The Prince Charles Hospital, Brisbane, Australia
2. Northside Medical School, University of Queensland, Brisbane, Australia
3. Speech and Language Therapy, Barts Health NHS Trust, London, UK
4. Department of Speech Voice and Swallowing, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
5. Intensive Care, Medical Centre Leeuwarden, The Netherlands