Wickramasinghe, A
Tulloch, A D
Hayes, R D
Chang, C-K
Broadbent, M
Di Forti, M
Murray, R M
Iyegbe, C
Stewart, R
Article History
Received: 11 November 2014
Revised: 20 April 2015
Accepted: 14 June 2015
First Online: 15 December 2015
Competing interests
: RS, RDH, C-KC, MB and ADT receive salary support from the National Institute for Health Research (NIHR); Mental Health Biomedical Research Centre at South London and Maudsley NHS Foundation Trust and Institute of Psychiatry, King's College London. The remaining authors declare no conflict of interest.