Funding for this research was provided by:
Medical Research Council (MR/L006529/1)
Text and Data Mining valid from 2020-02-21
Received: 20 November 2019
Accepted: 13 February 2020
First Online: 21 February 2020
Ethics approval and consent to participate
: All data was obtained from an anonymized clinical audit database. Therefore informed consent was not required for analysis of this data.
: Not applicable.
: The authors declare that they have no competing interests.