Text and Data Mining valid from 2019-02-26
Received: 10 October 2018
Accepted: 13 December 2018
First Online: 26 February 2019
Ethics approval and consent to participate
: The study was presented to the local ethics committee. The committee found that it did not need approval since there was no intervention involved, which is in line with Danish law [CitationRef removed].
: Not applicable.
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