1. Department of Respiratory and Sleep Medicine, Austin Health, Melbourne, Victoria, Australia
2. Victorian Respiratory Support Service, Melbourne, Victoria, Australia
3. Institute for Breathing and Sleep, Melbourne, Victoria, Australia
4. Barwon Health, Geelong, Victoria, Australia
5. Deakin University, Geelong, Victoria, Australia
6. University of Melbourne, Melbourne, Victoria, Australia
7. Department of Emergency Medicine, Esbjerg University Hospital, Esbjerg, Denmark