Pettersson-Pablo, Paul http://orcid.org/0000-0001-8458-6448
Cao, Yang
Bäckström, Torbjörn
Nilsson, Torbjörn K.
Hurtig-Wennlöf, Anita
Funding for this research was provided by:
AFA Försäkring (130275)
Region Örebro län (OLL-780061)
Medicinska fakulteten, Umeå Universitet (RV-865861)
Article History
Received: 2 August 2019
Accepted: 3 February 2020
First Online: 11 February 2020
Ethics approval and consent to participate
: The study protocol was approved by the Regional Ethical Review Board in Uppsala, Sweden (Reference number 2014/224). Written informed consent was obtained from all the participants.
: Not applicable.
: The authors declare that they have no competing interests.