1 Headache and Neurosonology Unit, Neurology Department, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo, 200, 00128, Rome, Italy. c.altamura@unicampus.it.
2 Headache and Neurosonology Unit, Neurology Department, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo, 200, 00128, Rome, Italy.