Article History
Received: 6 December 2019
Accepted: 25 February 2020
First Online: 6 March 2020
Ethics approval and consent to participate
: We confirm that this study complies with the national guidelines (HRA Decision Tool attached). Due to the nature of this study, completion of the survey was voluntary, and no ethical approval was required.
: Not applicable.
: The authors declare that they have no competing interests.