title: A proposal for a national registry on chronic migraines.
authors.affiliation: National Centre of Epidemiology, National Institute of Health, Rome, Italy. nicola.vanacore@iss.it.
authors.forename: Nicola
authors.initials: N
authors.lastname: Vanacore
authors.affiliation: Department of Neurological Sciences, University of Bologna Medical School, Bologna, Italy.
authors.forename: Sabina
authors.initials: S
authors.lastname: Cevoli
authors.affiliation: Department of Clinical and Experimental Medicine, Headache Centre, University of Parma, Parma, Italy.
authors.forename: Paola
authors.initials: P
authors.lastname: Torelli
authors.affiliation: Department of Neurological Motor and Sensorial Sciences, IRCCS San Raffaele Pisana, Rome, Italy.
authors.forename: Cinzia
authors.initials: C
authors.lastname: Aurilia
authors.affiliation: Department of Neurological Motor and Sensorial Sciences, IRCCS San Raffaele Pisana, Rome, Italy.
authors.forename: Gabriella
authors.initials: G
authors.lastname: Egeo
authors.affiliation: Department of Neurological Motor and Sensorial Sciences, IRCCS San Raffaele Pisana, Rome, Italy.
authors.forename: Luisa
authors.initials: L
authors.lastname: Fofi
authors.affiliation: C. Besta Neurological Institute and Foundation, Milan, Italy.
authors.forename: Licia
authors.initials: L
authors.lastname: Grazzi
authors.affiliation: C. Besta Neurological Institute and Foundation, Milan, Italy.
authors.forename: Gennaro
authors.initials: G
authors.lastname: Bussone
authors.affiliation: Department of Clinical and Experimental Medicine, Headache Centre, University of Parma, Parma, Italy.
authors.forename: Gian Camillo
authors.initials: GC
authors.lastname: Manzoni
authors.affiliation: Department of Neurological Sciences, University of Bologna Medical School, Bologna, Italy.
authors.forename: Pietro
authors.initials: P
authors.lastname: Cortelli
authors.affiliation: Department of Neurological Motor and Sensorial Sciences, IRCCS San Raffaele Pisana, Rome, Italy.
authors.forename: Piero
authors.initials: P
authors.lastname: Barbanti