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Submitted on: 20 February 2011.
Revised on: 17 March 2011.
Accepted on: 30 March 2011.
___________________General Psychiatry---BMJ PUBLISHING GROUP
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Submitted on: 10 February 2006.
Revised on: 03 April 2006.
Accepted on: 09 May 2006.
___________________General Psychiatry---BMJ PUBLISHING GROUP
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