1. Department of Anaesthesia and Pain Management, Alfred Hospital; Departments of Anaesthesia, and Epidemiology and Preventative Medicine, Monash University; Department of Anaesthesia, Royal Melbourne Hospital; Department of Pharmacology, University of Melbourne. Melbourne, Victoria
2. Department of Anaesthesia and Pain Management, Alfred Hospital; Departments of Anaesthesia, and Epidemiology and Preventative Medicine, Monash University; Melbourne, Victoria.
3. Department of Anaesthesia, Royal Melbourne Hospital; Honorary Principal Fellow, Department of Pharmacology, University of Melbourne, Melbourne, Victoria.
4. Department of Anaesthesia, St. Vincent's Hospital, Melbourne, Victoria.
5. School of Medicine and Pharmacology, University of Western Australia; Department of Anaesthesia and Pain Medicine, King Edward Memorial Hospital for Women, Perth, Western Australia.
6. Department of Anaesthesia, Austin Hospital, Melbourne, Victoria.