Tijdink, Joeri K.
Smulders, Yvo M.
Bouter, Lex M.
Vinkers, Christiaan H.
Article History
Received: 29 December 2017
Accepted: 3 September 2019
First Online: 18 September 2019
Ethics approval and consent to participate
: The ethical review board of the VU Medical Center considered the research project and decided that formal ethical approval was waived for this study. Consent to participate was implied by following the link to the survey and completing the survey.
: Not applicable.
: The authors declare that they have no competing interests.