Funding for this research was provided by:
Economic and Social Research Council (RES-000- 22-1123)
Innovative Medicines Initiative (115300)
Received: 26 August 2017
Accepted: 10 January 2018
First Online: 30 January 2018
Ethics approval and consent to participate
: The study was approved by the South London and Maudsley NHS Trust ethics committee and the UCL Research Ethics Committee. All participants—and in the case of minors—a parent gave informed written consent.
: Not applicable
: The authors declare that they have no competing interests.
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