Funding for this research was provided by:
Stiftelsen Promobilia (Eva Weidenhielm Broström)
Reumatikerförbundet (Eva Weidenhielm Broström)
Stockholms Läns Landsting (ALF 2015 Margareta Hedström)
Received: 27 November 2018
Accepted: 25 July 2019
First Online: 7 August 2019
Ethics approval and consent to participate
: The study was conducted according to the Declaration of Helsinki [CitationRef removed] and approved by Karolinska Institutet Regional Ethics Review Board in Stockholm. Written informed consent was obtained from the patients. Dnr: 2010/1014–31/1, 2016/991–32.
: Not applicable.
: The authors declare that they have no competing interests.