Text and Data Mining valid from 2018-11-14
First Online: 14 November 2018
Conflict of interest
: H.G.J. Bok, L.H. de Jong, T. O’Neill, C. Maxey and K.G. Hecker declare that they have no competing interests.
: The Ethical Review Board of the Netherlands Association for Medical Education approved this study (NERB number 884).