Received: 18 October 2019
Accepted: 21 July 2020
First Online: 31 July 2020
Ethics approval and consent to participate
: Approval to conduct the study was granted by the Ethical Committee of the Faculty of Psychology and Educational Sciences, Ghent University (application 2015/48). Informed written consent was received from all participants.
: Not applicable.
: The authors declare that they have no competing interests. However, the second other is closely involved with NA and therefore included as an expert in the analysis of this study.