Article History
Received: 1 October 2019
Accepted: 9 February 2021
First Online: 16 February 2021
Ethics approval and consent to participate
: The Chair of the Cantonal Commission for Ethical Research (CCER) designated the current study as exempted from formal review (Req-2019-00946). Moreover, in consideration of the retrospective nature of the study and the anonymization of the data making impossible to identify any individual or small subgroup of students, the teaching committee (Bureau de la Commission d’Enseignement) approved the project study without the need of informed consent.
: Consent to publish is also not applicable.
: The authors declare that they have no competing interests.