Funding for this research was provided by:
South London and Maudsley NHS Foundation Trust
Article History
Received: 26 August 2018
Accepted: 5 December 2018
First Online: 2 January 2019
Compliance with ethical standards
:
: On behalf of all the authors, the corresponding author states that there is no conflict of interest.
: The manuscript is based on secondary analysis of published data only, and does not contain primary analysis of any clinical study or patient data.