Funding for this research was provided by:
Roche Farma Spain (ML39424)
Received: 15 December 2018
Accepted: 29 April 2019
First Online: 20 May 2019
Change Date: 8 July 2019
Change Type: Correction
Change Details: It has been highlighted that the original article  contained a mistake in the ‘Results’ section, specifically in the percentages of female subjects and those with diagnosis of RRMS. Please note that this mistake has only been present in the ‘Results’ section, the Abstract and Table 1 remain unchanged. This article shows the incorrect and correct version of the percentages.
Ethics approval and consent to participate
: The study was approved by the institutional review board of the Fundación Jiménez Díaz (Madrid, Spain). Written informed consent was obtained from all subjects.
: Not applicable.
: JM, NM, and ER-B are employees of Roche Farma Spain. None of the other authors report any conflict of interest.
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