About the Authors
Department of Neurological Sciences, La Sapienza University, Rome, Italy
IRCCS San Raffaele Pisana, Rome, Italy
The authors have declared that no competing interests exist.
ICMJE criteria for authorship read and met: GC AT. Agree with the manuscript's results and conclusions: GC AT. Wrote the first draft of the paper: GC. Contributed to the writing of the paper: AT.