Funding for this research was provided by:
Odense University Hospital Research Fund
Text and Data Mining valid from 2018-10-29
Received: 18 June 2018
Accepted: 1 October 2018
First Online: 29 October 2018
Ethics approval and consent to participate
: The need for informed consent has been waived by The Danish Data Protection Agency and is deemed unnecessary according to national regulations. The Danish Data Protection Agency approved the register study (J.nr. 2014-41-3585 and 2013-41-2549). Furthermore, a written informed consent to participation in register-based studies in Denmark is not needed.
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: The authors declare that they have no competing interests.
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