- Dr Jens Kuhn, Department of Psychiatry and Psychotherapy, University of Cologne, Kerpener Strasse 62, 50924 Cologne, Germany;
- Received 12 December 2006
- Revised 8 April 2007
- Accepted 11 April 2007
- Published in print 1 October 2007.
- Published online 18 September 2007.
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