Sami Musa Basseer, Shiers David, Latif Saqib, Bhattacharyya Sagnik
Institute of Psychiatry, Psychology and Neuroscience, King's College London, London SE5 8AF, UK
South London and Maudsley NHS Foundation Trust, London.
BMJ. 2017 Nov 8;359:j4752. doi: 10.1136/bmj.j4752.