Andersson, Maria http://orcid.org/0000-0001-5339-7142
Östholm-Balkhed, Åse
Fredrikson, Mats
Holmbom, Martin
Hällgren, Anita
Berg, Sören
Hanberger, Håkan
Funding for this research was provided by:
Linköping University
Article History
Received: 10 December 2018
Accepted: 1 March 2019
First Online: 25 March 2019
Compliance with ethical standards
: The study was approved by the Ethics Review Board of Linköping University, Sweden (2013/466–31) and was performed in accordance with the Helsinki Declaration. The study was funded by the County of Östergötland.
: The authors declare that they have no conflict of interest.