Funding for this research was provided by:
Economic and Social Research Council (ES/N000404/1)
Medical Research Council (MR/L01999X/1, MR/N013700/1)
Academy of Finland (297908, 266286, 272376, 314383)
Text and Data Mining valid from 2018-10-20
Received: 28 July 2018
Accepted: 3 October 2018
First Online: 20 October 2018
Ethics approval and consent to participate
: Ethical approval was granted by the National Research Ethics Service London-Westminster, the St Thomas’ Hospital Research Ethics Committee (EC04/015 and 07/H0802/84). All research participants have signed the informed consent prior to taking part in any research activities.
: Not applicable.
: The authors declare that they have no competing interests.
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