Funding for this research was provided by:
Familjen Kamprads Stiftelse
Health Care Region Kronoberg, Sweden
Text and Data Mining valid from 2019-05-07
Received: 12 October 2018
Accepted: 27 March 2019
First Online: 7 May 2019
Ethics approval and consent to participate
: The study protocol was approved by the Regional Ethical Review Board at Linköping University, to which all Kronoberg is referred for Ethical Reviewing, application no 2013/375–31. Consent to participate was approved to be waived due to risk of missing selective groups with worst outcome, retrospective nature of study, and value of population based data.
: Not applicable for this study.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.