Mariken Stegmann

Additional information  Acknowledgements  The authors would like to thank Daniël Bosold (djText) for textual editing.  Contributors  All authors contributed to the literature review and the writing and revision of the paper.  The first authorship position is jointly shared between Mariken E. Stegmann and Suzanne  Festen.  Conflict of interest  The authors declare that they have no conflict of interest.  Funding  No funding was received specifically for the preparation of this review.  36 Chapter 3