Funding for this research was provided by:
Villum Fonden (11744)
Article History
Received: 22 January 2019
Accepted: 28 March 2019
First Online: 3 May 2019
Compliance with ethical standards
:
: We declare that we have no conflict of interest.
: All procedures performed in this study 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. For this type of study formal consent is not required.
: For this type of retrospective study formal consent is not required.