Specht, Ina Olmer http://orcid.org/0000-0002-3114-4715
Janbek, Janet
Thorsteinsdottir, Fanney
Frederiksen, Peder
Heitmann, Berit L.
Funding for this research was provided by:
Strategiske Forskningsråd (0603-00453B)
Article History
Received: 1 October 2018
Accepted: 30 June 2019
First Online: 5 July 2019
Compliance with ethical standards
:
: All relevant registries are accessible and the collection of data from these registries is in accordance with accepted ethical principles for informed consent according to the Declaration of Helsinki. Statistics Denmark created the relevant sub-data sets anonymized. Permissions from the Danish Data Protection (J. no. 2012-41-1156) and the Ethical Committee of the Capital Region of Denmark (H-3-2011-126) have been granted.
: The authors declare that they have no conflicts of interest.