Received: 23 March 2020
Accepted: 31 August 2020
First Online: 14 September 2020
Ethics approval and consent to participate
: The study was approved by the Nottingham Trent University Human Invasive Ethics Committee (Application Number: 530). Written parent/guardian/care-giver consent and written participant assent were obtained.
: Not applicable (no identifying images or personal clinical data are reported).
: The authors’ declare they have no competing interests.