Funding for this research was provided by:
Natur og Univers, Det Frie Forskningsråd (0602-02216B)
Received: 26 April 2018
Accepted: 2 January 2019
First Online: 17 January 2019
: The animals were euthanized according to the guidelines provided by the Danish Animal Experiments Inspectorate (DAEI). Euthanasia for scientific purposes, such as the harvest of tissue for in vitro studies, did not require permits from the DAEI.
: All authors approved the final manuscript.
: The authors declare that they have no competing interests.
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