1. School of Medicine and Pharmacology, University of Western Australia, Perth, Australia.
2. Department of Psychological Medicine, University of Otago, Christchurch, New Zealand.
3. Van der Veer Institute, Christchurch, New Zealand.
4. Department of Psychology, University of Canterbury, Christchurch, New Zealand.
5. Department of Medicine, University of Otago, Christchurch, New Zealand.
6. United BioSource Corporation, Goring, UK.