Text and Data Mining valid from 2018-06-18
Received: 5 March 2018
Accepted: 5 June 2018
First Online: 18 June 2018
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: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This research was exempt from review by an institutional review board or ethical authority under Danish law. Informed consent was obtained from all individual participants included in the study.
: Not applicable
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