Funding for this research was provided by:
National Institute for Health Research (DTC-RP-PG-0311-12001)
Received: 17 December 2020
Accepted: 3 February 2021
First Online: 19 February 2021
Ethics approval and consent to participate
: Permission was granted by the UK Confidentiality Advisory Group to collect limited data from the clinical notes of all patients attending these services without the requirement of informed consent from each patient. Ethical approval for the study was also awarded by an NHS Regional Ethics Committee.
: Not applicable.
: The authors declare that they have no competing interests.