Funding for this research was provided by:
Università degli Studi di Milano
Received: 7 May 2020
Accepted: 8 September 2020
First Online: 17 September 2020
Change Date: 4 May 2021
Change Type: Correction
Change Details: A Correction to this paper has been published:
Change Details: https://doi.org/10.1007/S10072-021-05283-2
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: The study protocol was approved by the local Ethics Committee. An informed consent was obtained from each participant and the research was conducted according to the principles of the Helsinki Declaration.