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Article History

Received: 17 August 2018

Accepted: 10 December 2018

First Online: 19 December 2018

Ethics approval and consent to participate

: All subjects included signed informed consent. The ethics committee of the University of Cagliari approved the study.

: Not applicable.

: The author(s) declared no potential conflicts of interest with respect to the research, authorship,and/or publication of this article.Dr. Fenu is an editorial board member of BMC Neurology and received honoraria for consultancy from Novartis, Biogen and for speaking from Merck Serono and Teva.Dr. Lorefice received speaker fee from Teva and serves on scientific advisory boards for Biogen.Dr. Frau serves on scientific advisory boards for Biogen, received honoraria for speaking from Merck Serono and Teva.Dr. Coghe and received speaker fee from Teva and Almirall.Professor Cocco and Marrosu have received honoraria for consultancy or speaking from Bayer, Biogen, Novartis, Sanofi, Genzyme, Serono and Teva.Dr. Fronza and Dr. Arru have nothing to disclose.

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