Funding for this research was provided by:
Department of Anesthesiology and Intensive Care, University Hospital Linköping, Sweden, and Region Östergötland
Article History
Received: 12 November 2017
Accepted: 13 August 2018
First Online: 18 August 2018
Ethics approval and consent to participate
: Ethical approval was obtained from the Regional Ethical Review Board in Linköping in March 2011 (2011/101–31), as was written informed consent from all included patients.
: Not applicable
: RGH has given paid lectures for Baxter Healthcare. HB and LN declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.