van Beek, Michiel W. H.
Roukens, Monique
Jacobs, Wilco C. H.
Timmer-Bonte, Johanna N. H.
Kramers, Cees
Article History
First Online: 22 June 2018
Compliance with Ethical Standards
:
: No sources of funding were used to assist in the conduct of this study or the preparation of this article.
: Michiel W. H. van Beek, Monique Roukens, Wilco C. H. Jacobs, Johanna N. H. Timmer-Bonte, and Cornelis Kramers have no conflicts of interest directly relevant to the content of this study.
: The study protocol was reviewed by the Radboud University Medical Center Institutional Review Board, which concluded that the study did not fall within the scope of the Medical Scientific Research Act because it was a retrospective observational study, without intervention and with no burden for the participants.
: No written informed consent was needed.