1. Australian and New Zealand Tripartite Anaesthesia Data Committee, Australian and New Zealand College of Anaesthetists, Melbourne, Australia
2. Faculty of Medicine, The University of Queensland, Brisbane, Australia
3. Department of Anaesthesia and Perioperative Medicine, Royal Brisbane and Women’s Hospital, Herston, Australia
4. Department of Anaesthesia, Royal Adelaide Hospital, Adelaide, Australia
5. Faculty of Medicine, The University of Adelaide, Adelaide, Australia