1. The Queen Elizabeth Hospital, Central Adelaide Local Health Network; Respiratory Medicine Unit; Adelaide Australia
2. The University of Adelaide; School of Medicine; Adelaide Australia
3. University of South Australia; School of Health Sciences; Adelaide Australia
4. University of Ottawa and Regional Paramedic Program for Eastern Ontario; Ottawa Hospital Research Institute (OHRI); Ottawa Canada 7001
5. University of Tasmania; School of Medicine; Hobart Tasmania Australia 7001