[1] Garlands Hospital,
[2] North Lakeland Health Care NHS Trust,undefined
[3] Carlisle CA1 3SX,undefined
[4] UK e-mail: prosser@nlhcpr.demon.co.uk,undefined
[5] Tel.: +44-1228-602250,undefined
[6] Fax: +44-1228-602470,undefined
[7] Department of Psychiatry and Behavioural Sciences,undefined
[8] University College London,undefined
[9] London,undefined
[10] UK,undefined
[11] Institute of Psychiatry,undefined
[12] London,undefined
[13] UK,undefined
[14] University of Manchester,undefined
[15] Manchester,undefined
[16] UK,undefined