Funding for this research was provided by:
Eva og Henry Frænkels Mindefond (N/A)
The Independent Research Fund Denmark, Medicine (DFF-4183-00359)
Text and Data Mining valid from 2019-03-22
Received: 25 June 2018
Accepted: 14 February 2019
First Online: 22 March 2019
Ethics approval and consent to participate
: According to Danish law, ethical approval and informed content are not necessary because the study uses routinely collected data in the national registries.
: Not applicable (see Ethics approval)
: The authors declare that they have no competing interests.
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