title: Long-term use of daily sumatriptan injections in severe drug-resistant chronic cluster headache.
authors.affiliation: Antwerp, Belgium.
authors.forename: Werner R
authors.initials: WR
authors.lastname: Verslegers
authors.affiliation: Milan, Italy.
authors.forename: Massimo
authors.initials: M
authors.lastname: Leone
authors.affiliation: Milan, Italy.
authors.forename: Alberto
authors.initials: A
authors.lastname: Proietti Cecchini
mesh_terms: D003027:Cluster Headache; D006801:Humans; D007279:Injections, Subcutaneous; D019966:Substance-Related Disorders; D018170:Sumatriptan
chemical_list: D018170:Sumatriptan