. 2016 Jun;40(3):156–161. doi: 10.1192/pb.bp.114.050278
© 2016 The Authors
This is an open-access article published by the Royal College of Psychiatrists and distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.