1. Department of Respiratory and Sleep Medicine, The Royal Melbourne Hospital, Parkville, Victoria Australia;
2. Department of Medicine (Royal Melbourne Hospital), University of Melbourne, Parkville, Victoria Australia;
3. Department of Rural Health, University of Melbourne, Northeast Health Wangaratta, Wangaratta, Victoria, Australia;
4. Department of Medicine, Northeast Health Wangaratta, Wangaratta, Victoria, Australia;
5. St Vincent’s Hospital and Victorian Comprehensive Cancer Centre, University of Melbourne, Melbourne, Victoria, Australia;
6. St Vincent’s Hospital, Victoria Parade, Fitzroy, Victoria, Australia