Text and Data Mining valid from 2018-06-11
Received: 17 January 2018
Accepted: 31 May 2018
First Online: 11 June 2018
Ethics approval and consent to participate
: The study protocol was submitted to the University Hospitals of Leuven Medical Ethics Committee and approved in December 2015 (number mp08419). People were informed in writing about the purpose of the study and gave their verbal consent in case of the paper version and by ticking the box in case of the electronic version. The Belgian legislation and ethical regulations do not require a written informed consent in case no medical or personal data are collected.
: According to the informed consent, participating subjects agreed to publish the results of the anonymous data.
: The authors declare that they have no competing interests.
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