Spaans, E. A. J. M. http://orcid.org/0000-0003-1881-3475
van Dijk, P. R.
Groenier, K. H.
Brand, P. L. P.
Kleefstra, N.
Bilo, H. J. G.
Funding for this research was provided by:
Sources of financial and material support: Department of Innovation & Science, Isala Academy, Zwolle
Article History
Received: 5 August 2017
Accepted: 9 August 2018
First Online: 17 August 2018
Ethics approval and consent to participate
: Upon consultation, the Medical Ethical Committee of the Isala hospital stated, that, retrospective studies using anonymized data are exempt from ethical review under Dutch law, medical ethics approval was not required for this study. This was confirmed in writing.
: Not applicable.
: The authors declare that they have no competing interests.
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