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Article History

Received: 28 October 2018

Accepted: 21 October 2019

First Online: 6 November 2019

Ethics approval and consent to participate

: According to the criteria of the Dutch Medical Research Involving Human Subjects Act, medical ethical approval was not required for this study (Article 1, paragraph 1b). The study was reviewed and approved by the TNO Review Board (project 031.20392/01.01 dated March 9, 2010). The four participants of the semi-structured focused interviews gave their verbal consent to participate prior to the interviews.

: Not applicable.

: The authors declare that they have no competing interests.