Vossen, T. E. http://orcid.org/0000-0002-5276-1114
Tigelaar, E. H.
Henze, I.
De Vries, M. J.
Van Driel, J. H. http://orcid.org/0000-0002-8185-124X
Article History
Accepted: 3 May 2019
First Online: 13 May 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Of all participating teachers, active informed consent was obtained. Ethical approval was obtained from the Ethics Committee at the Leiden University Graduate School of Teaching.