Funding for this research was provided by:
Joachim Herz Stiftung (no number)
Received: 28 November 2020
Accepted: 7 May 2021
First Online: 5 June 2021
: The study was performed in accordance with the Declaration of Helsinki and the Ethics Committee of the Chamber of Physicians, Hamburg, confirmed the innocuousness of the study with consented, anonymized, and voluntary participation (PV3649). All participants provided informed written consent for participation in this study.
: Not applicable.
: SH has a position as Senior Editorial Board Member to BMC Medical Education. EZ and VO have no competing interests.