Footnotes

• Contributors JAMB, EvH and WNKAvM conceptualised the study design and contents of this article and actively participated in its construction including data/evidence gathering and writing of all versions of the manuscript. DS, MAHBMvdH and JB actively participated in the writing and revising of the draft especially focussing on the ethical aspects. RH actively participated in the writing and revising of the draft especially focussing on the legal aspects. DY provided empirical evidence and personal experience with the topic from a Belgian perspective and commented on the final versions of the paper. All authors approved the final manuscript as submitted and agreed to be accountable for all aspects of the work.

• Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

• Competing interests None declared.

• Provenance and peer review Not commissioned; internally peer reviewed.