Text and Data Mining valid from 2018-12-01
Received: 14 September 2018
Accepted: 13 November 2018
First Online: 12 December 2018
Ethics approval and consent to participate
: Ethical approval was not sought as we extracted data from already published work.
: Not applicable
: This report is an independent research supported by the National Institute for Health Research (NIHR Doctoral Research Fellowship, Dr. Akshay Shah, DRF-2017-10-094). The views expressed in this publication are those of the authors and not necessarily those of the NHS, the National Institute for Health Research of the Department of Health. No other conflicts of interest are declared by the remaining authors.
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