Funding for this research was provided by:
National Institute for Health Research (15/24/17)
Received: 6 March 2019
Accepted: 28 October 2019
First Online: 21 November 2019
Ethics approval and consent to participate
: This survey met the Health Research Authority (HRA) criteria for a service evaluation rather than research, and was approved as such by NoCLOR [CitationRef removed]. This meant that approval via a Research Ethics Committee was deemed unnecessary and was waived.
: Not applicable.
: The authors declare that they have no competing interests.