Text and Data Mining valid from 2018-06-21
Received: 7 February 2017
Accepted: 10 May 2018
First Online: 21 June 2018
: The authors declare that they have no competing interests.
: The ethical committees approved the study and stated that it does not fall under the scope of the Belgian Law of 7 May 2004 on experiments on the human person (ExternalRef removed(text+contains+(%27%27))#LNK0008). The voluntary nature of the study was explained in the cover letter which was sent out to all experts and end-users. We considered receiving a response as consent given.
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