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Article History

Received: 17 February 2022

Accepted: 22 April 2022

First Online: 13 June 2022

Declarations

:

: The study protocol was reviewed and approved by the Ethical Committee of the University of Campania “Luigi Vanvitelli”. The study was conducted according to the ethical principles of the Declaration of Helsinki. Informed consent to participate in the study was obtained from all patients.

: Not applicable.

: Marcello Silvestro has received speaker honoraria from Lilly, Novartis and Teva. Alessandro Tessitore has received speaker honoraria from Novartis, Schwarz Pharma/UCB, Lundbeck, Abbvie and Glaxo and serves as an associate editor of European Journal of Neurology. Gioacchino Tedeschi has received speaker honoraria from Sanofi-Aventis, Merck Serono, Bayer Schering Pharma, Novartis, Biogen-Dompe´ AG; has received funding for travel from Bayer Schering Pharma, Biogen-Dompe´ AG, Merck Serono, Novartis and Sanofi Aventis; and serves as an associate editor of Neurological Sciences. Antonio Russo has received speaker honoraria from Allergan, Novartis, Lilly and Teva and serves as an associate editor of Frontiers in Neurology (Headache Medicine and Facial Pain session). The other authors have nothing to declare.