1. Department of Psychological Medicine; University of Otago; Christchurch New Zealand
2. Institute of Neuroscience; University of Newcastle; Newcastle upon Tyne UK
3. Department of Psychology; University of Canterbury; Christchurch New Zealand
4. Department of Psychological Medicine; Institute of Psychiatry, Psychology and Neuroscience; King's College London; London UK
5. South London & Maudsley NHS Foundation Trust; London UK
6. Clinical Research Unit; Canterbury District Health Board; Christchurch New Zealand