Text and Data Mining valid from 2018-01-15
Received: 1 November 2017
Accepted: 2 January 2018
First Online: 15 January 2018
Ethics approval and consent to participate
: No ethical approval was required as the survey was optional and anonymous and study aims explained to all candidates prior to performing the survey.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.