Jendeberg, Johan http://orcid.org/0000-0001-8949-119X
Thunberg, Per http://orcid.org/0000-0002-8351-3367
Lidén, Mats http://orcid.org/0000-0002-1346-1450
Funding for this research was provided by:
Region Örebro län (OLL-811941, OLL-684531))
Article History
Received: 23 December 2019
Accepted: 7 February 2020
First Online: 27 February 2020
Compliance with ethical standards
:
: The authors of this manuscript declare no relationship with any companies, whose products or services may be related to the subject matter of the article.
: This retrospective study was performed in accordance with the ethical standards of the Regional Research Committee and with the 1964 Helsinki declaration and its later amendments. The Regional Research Ethics Board approved the study protocol and waived the informed consent requirement.