Odhagen, Erik http://orcid.org/0000-0002-6854-5248
Sunnergren, Ola
Söderman, Anne-Charlotte Hessén
Thor, Johan
Stalfors, Joacim
Funding for this research was provided by:
National Programme for Quality Registres
Article History
Received: 15 January 2018
Accepted: 17 March 2018
First Online: 24 March 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The study was approved by The Regional Ethical Review Board in Gothenburg, Sweden (Reg. No. 257-14).
: For this type of study, formal consent is not required.