Dierkes, Jutta http://orcid.org/0000-0003-0663-877X
Dahl, Helene
Lervaag Welland, Natasha
Sandnes, Kristina
Sæle, Kristin
Sekse, Ingegjerd
Marti, Hans-Peter
Article History
Received: 28 September 2017
Accepted: 24 September 2018
First Online: 11 October 2018
Change Date: 24 December 2018
Change Type: Correction
Change Details: Following publication of the original article [1], the authors reported an error in the presentation of Table 3 and Table 4.
Ethics approval and consent to participate
: The study was conducted in accordance with principles of the Declaration of Helsinki and was approved by the Regional Committee for Medical and Health Research Ethics (REK Vest, (regionale komiteer for medisinik og helsefaglig forskningsetikk, University of Bergen, No. 2014/1790). All patients signed an informed consent prior to participation.
: Not applicable.
: The authors declare that they have no competing interests. The results presented in this paper have not been published elsewhere in whole or in part, except in abstract form.
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