Michelle Cleary1, Garry Walter2, Sandra Matheson3. 1. 1Faculty of Nursing and Midwifery, University of Sydney, Sydney, NSW, Australia. 2. 3Discipline of Psychological Medicine, University of Sydney, Sydney, NSW, Australia. 3. 2Research Unit, Sydney South West Area Mental Health Service (Eastern Zone), Concord Centre for Mental Health, Concord Hospital, Concord, NSW, Australia.