Received: 7 February 2019
Accepted: 30 January 2020
First Online: 22 February 2020
Ethics approval and consent to participate
: Ethical approval was received by the MHH Ethics Committee. The study and subsequent data analyses were executed according to MHH evaluation procedures. All potential participants were informed about the purpose and content of the study and that data would be used only in anonymized form. This information was given in written form in the questionnaire. Participation was voluntary and anonymous.
: Not applicable
: The authors declare that they have no competing interests.