Steffensen, Ellen Hollands http://orcid.org/0000-0003-0216-9646
Cary, Clint
Jensen, Jørgen Bjerggaard
Larsson, Heidi
Weiner, Michael
Nørgaard, Mette
Funding for this research was provided by:
Sundhed og Sygdom, Det Frie Forskningsråd (6110-00040)
The University of Copenhagen foundation for medical students (A4996)
Christian Larsen & Judge Ellen Larsens Foundation (5011780)
Article History
Received: 1 February 2018
Accepted: 11 October 2018
First Online: 24 October 2018
Authors’ information
: MW is Chief of Health Services Research and Development at the Richard L. Roudebush Veterans Affairs Medical Center in Indianapolis, Indiana, USA. The views expressed in this article are those of the authors and do not necessarily represent the views of the U.S. Department of Veterans Affairs.
: The Danish Data Protection Agency approved the study (journal number 2014-54-0922). Studies based solely on data from the Danish national registers do, by Danish legislation, not require approval from the Danish Health Research Ethics committees, as study participants are never contacted, and consent is not required for the use of register information.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.