Funding for this research was provided by:
The Foundation of Swedish MS Research
Umea University
Article History
Received: 22 November 2020
Revised: 3 January 2021
Accepted: 4 January 2021
First Online: 21 January 2021
Compliance with ethical standards
:
: M.B. and P.S. declares no disclosures relevant to the manuscript. J.S. has received material research support from Synapsys and Interacoustics, and institutional consultancy fees from Mabion S.A.
: The study was approved by the local ethics committee in Umeå (2013/445-31).
: The patients had provided oral consent to participate in the MS registry.
: All co-authors have read and approved the submission.