Received: 12 May 2020
Accepted: 9 November 2020
First Online: 19 November 2020
Ethics approval and consent to participate
: All participants had to read a written consent form for purposes of this study before fulfilment of the survey. Fulfilment of the survey by the participant was an equivalent to his or her consent to take part in this study. The Bioethics Committee of the Medical University of Gdańsk had given its approval to carry out this study. Bioethics Committee of the Medical University of Gdańsk approval number: NK BBN/157/2020.
: Not applicable.
: The authors declare that they have no competing interests.