Received: 15 November 2019
Accepted: 6 July 2020
First Online: 11 September 2020
Ethics approval and consent to participate
: Dutch legislation, which is called the “Wet Medisch-wetenschappelijk Onderzoek”, exempts this study from requiring ethical approval according to Dutch guidelines, because in this study no data on human subjects nor human material have been recorded or analyzed. This means that this study does not fall under the heading of ‘medical research’ as stated in the Declaration of Helsinki, nor do any of the principles mentioned in this Declaration apply to our research. The Data Protection aspects of the work were reviewed by the AVG/Data Protection team of the Faculty of Health, Medicine and Life Sciences of Maastricht University and were found to be compliant with the requirements. The above was stated in letter with approval number FHML-REC/2020/006, which has been reviewed by the Editor of the journal.
: Not Applicable.
: The authors declare that they have no competing interests.