Text and Data Mining valid from 2019-05-28
Received: 12 December 2018
Accepted: 9 May 2019
First Online: 28 May 2019
Ethics approval and consent to participate
: The study was approved by the Regional Scientific Ethical Committees for Southern Denmark (S-20130114) and the Danish Health Authority (CIV-14-01-011780), and was conducted in accordance with the Declaration of Helsinki. All participants provided written informed consent prior to participation.
: Not applicable.
: The authors declare that they have no competing interests.
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