Lehmann, Ronny http://orcid.org/0000-0003-0976-4384
Lutz, Thomas
Helling-Bakki, Astrid
Kummer, Sebastian
Huwendiek, Sören
Bosse, Hans Martin
Article History
Received: 5 September 2018
Accepted: 26 December 2018
First Online: 5 January 2019
Ethics approval and consent to participate
: The study was approved by the Ethics Commission of the Medical Faculty Heidelberg, Germany (reference no. S-393/2016). Written informed consent was obtained from all participants. All data were collected anonymously and local medical educators had no access to individual recordings. These were supplied to the external video assessors only.
: Not applicable.
: The authors declare that they have no competing interests.
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