Text and Data Mining valid from 2020-03-12
Received: 24 September 2019
Accepted: 2 March 2020
First Online: 12 March 2020
Ethics approval and consent to participate
: All participants were volunteers and signed the informed consent approved by the Academic Ethical Committee Brussels Alliance for Research and Higher Education (B200–2017-061).
: Not applicable.
: The authors do not have any significant conflicts of interest relevant to this manuscript.