Received: 19 August 2020
Accepted: 31 January 2021
First Online: 22 February 2021
Ethics approval and consent to participate
: Swiss research legislation (Human research ordinance HRO, §2) deems studies such as ours, which do not collect health related individual data, exempt from full ethical review. Consequently, this study has not been submitted for review to the “Kantonale Ethikkommission für die Forschung” (Ethics Committee for Research of the Cantone of Bern, Switzerland). Nevertheless, each participant provided written informed consent before study inclusion.
: Not applicable.
: WEH has received research funding from Mundipharma Research UK, Roche Diagnostics Germany, the Swiss National Science Foundation and Leardal foundation Norway and research support in kind from Prytime Medical, USA and provided paid consultancy services to AO foundation Switzerland. WEH is associate editor at BMC Medical Education. All other authors declare that they have no competing interests.