Text and Data Mining valid from 2019-03-25
Received: 2 August 2018
Accepted: 26 February 2019
First Online: 25 March 2019
Ethics approval and consent to participate
: The VU University Medical Centre’s Medical Ethics Evaluation Committee approved of the study; archive numbers 92/138 (1992-) and 2002/141 (2002-). A written informed consent was obtained from all participants of this study.
: Not applicable.
: The authors declare that they have no competing interests.
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