Received: 17 October 2021
Accepted: 7 July 2022
First Online: 19 July 2022
: ND and HF agree that their images as used in Fig. InternalRef removed: user interface of educator (left) and trainee (right) are being used for publication.
: The authors declare to have no competing interests as defined by BMC, or other interests that might be perceived to influence the results and/or discussion reported in this paper.