[1] Sapienza Univ, Dept Clin & Mol Med, Rome, Italy
[2] IRCCS San Raffaele Pisana, Headache & Pain Unit, Rome, Italy
[3] Carlo Besta Neurol Inst & Fdn, Neuroalgol Unit, Milan, Italy
[4] IRCCS Ist Sci Neurol Bologna, Bologna, Italy
[5] Univ Turin, Dept Neurosci, Turin, Italy
[6] Univ Hosp Careggi, Headache Ctr, Florence, Italy
[7] IRCCS Neuromed, Pozzilli, IS, Italy
[8] Santa Maria della Misericordia Hosp, Neurol Clin, Perugia, Italy
[9] IRCCS C Mondino Fdn, Headache Sci Ctr, Pavia, Italy
[10] Univ Pavia, Dept Brain & Behav Sci, Pavia, Italy
[11] electroCore Inc, Basking Ridge, NJ 07920 USA
[12] Univ Bari Aldo Moro, Neurophysiol & Pain Unit, Bari, Italy