- Correspondence to: J A Sweeney, PhD Center for Cognitive Medicine, Department of Psychiatry (MC 913), University of Illinois at Chicago, 912 S. Wood St, Suite 235, Chicago, IL 60612-7327, USA;
- Received July 7, 2003
- Accepted December 14, 2003
- Revised December 9, 2003
- First published August 16, 2004.
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