[1] Kings Coll London, MRC Social Genet & Dev Psychiat Ctr, London, England
[2] Kings Coll London, Inst Psychiat Psychol & Neurosci, Dept Psychol, London, England
[3] Kings Coll London, Inst Psychiat Psychol & Neurosci, Dept Hlth Serv & Populat Res, London, England
[4] Kings Coll London, Inst Psychiat Psychol & Neurosci, Dept Psychosis Studies, London, England
[5] South London & Maudsley NHS Fdn Trust, Psychosis Clin Acad Grp, London, England
[6] Trinity Coll Dublin, Dept Psychiat, Dublin, England