[1] Womens Headache Ctr, Dept Gynecol & Obstet, Turin, Italy
[2] Natl Neurol Inst Carlo Besta, Clin Neurosci, Milan, Italy
[3] Univ Bologna, Neurol Sci, Bologna, Italy
[4] IRCCS San Raffaele Pisana, Dept Neurol Motor & Sensorial Sci, Headache & Pain Unit, Rome, Italy
[5] Sestri Ponente Hosp, Dept Head Neck, Genoa, Italy
[6] St Andrea Hosp, Neurol Headache Ctr, Rome, Italy
[7] San Giuseppe Moscati Hosp, Neurol Unit, Avellino, Italy
[8] Mediservice, Biometr Unit, Milan, Italy
[9] Italian Inst Telemed, Clin Res Unit, Solbiate Arno, Varese, Italy
[10] Osped San Carlo Borromeo Milano, Headache Ctr, Milan, Italy