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Article History

Received: 18 January 2019

Accepted: 17 January 2020

First Online: 30 January 2020

Ethics approval and consent to participate

: The respondents gave their approval and consent to participate. The informed consent obtained was written. Respondents are indicated by number instead of by name or function. All names, places and other characteristics of the participants involved are changed and therefore untraceable. The VU University Medical Centre’s Medical Research Ethics Committee declared the study did not fall under the Medical Research (with Human Subjects) Act (<i>WMO</i>), as no interventions were performed.

: The respondents gave their approval for publication.

: The authors declare that they have no competing interests.