Text and Data Mining valid from 2018-03-22
Received: 23 October 2017
Accepted: 13 March 2018
First Online: 22 March 2018
Compliance with ethical standards
: The authors have no competing interests to declare.
: Ethics approval was granted by the Carnegie Faculty Research Ethics Committee (Leeds Beckett University, UK).
: Prior to volunteering, all participants signed a written statement of consent.