Received: 26 January 2019
Accepted: 13 December 2019
First Online: 17 January 2020
Ethics approval and consent to participate
: This study was approved by the Faculty of Medicine University of Porto/São João Hospital Ethics Committee in compliance with the Helsinki Declaration. Study participation was voluntary. All students were adequately informed about the study’s purpose and were granted anonymity and confidentiality regarding their data. We obtained written informed consent from all students prior to study participation.
: Not applicable.
: The authors declare that they have no competing interests.