Text and Data Mining valid from 2019-10-22
Received: 14 April 2019
Accepted: 12 October 2019
First Online: 22 October 2019
Ethics approval and consent to participate
: The study was approved by the Surrey Borders research ethics committee. Written informed consent was obtained from all study participants in accordance with the Declaration of Helsinki.
: Participants have expressed their consent for anonymized data publication in written or verbal form.
: The authors declare that they have no competing interests.