Submitted on: 01 May 2020.
Revised on: 09 August 2020.
Accepted on: 20 August 2020.
___________________BJPsych Bulletin---CAMBRIDGE UNIV PRESS
Submitted on: 15 December 2005.
Revised on: 16 January 2006.
Accepted on: 30 January 2006.
___________________BJPsych Bulletin---CAMBRIDGE UNIV PRESS
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