Funding for this research was provided by:
Horizon 2020 (734548, 734584)
Wellcome Trust (206471/Z/17/Z, 206250/Z/17/Z)
Text and Data Mining valid from 2018-10-03
Received: 18 May 2018
Accepted: 21 August 2018
First Online: 3 October 2018
Ethics approval and consent to participate
: Institutional ethics approval was not sought because this is a retrospective study and the databases are anonymised and free of personally identifiable information.
: The authors declare that they have no competing interests.
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