Hafström, Ingiäld
Ajeganova, Sofia
Forslind, Kristina
Svensson, Björn
Article History
Received: 18 October 2018
Accepted: 21 January 2019
First Online: 4 February 2019
Ethics approval and consent to participate
: All patients gave their informed consent to the study, which was performed in accordance with the Helsinki Declaration. The following ethics committees approved the study: Lund university LU 154-95 and 398-01; Göteborg university Gbg M 45-95 and Ö 282-01; Linköping university Li 123-95 and 01-263; Karolinska Institutet KI 153-95 and 02-075.
: Not applicable.
: The authors declare that they have no competing interests.
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