1. Clinical Director, Mental Health Drug and Alcohol, Northern Sydney Local Health District, Macquarie Hospital, Sydney, NSW, Australia
2. Psychiatrist and Conjoint Senior Lecturer, School of Psychiatry, University of New South Wales, NSW, Sydney, Australia
3. Psychiatrist and Senior Lecturer, Discipline of Psychiatry and Centre for Values Ethics and the Law in Medicine,) University of Sydney, Sydney, NSW, and; Department of Psychiatry, Westmead Hospital, Westmead, NSW, Australia