title: Refractory headache: one term does not cover all--a statement of the European Headache Federation.
authors.affiliation: Headache Medical Centre, Seilerstaette Linz, Hospital Barmherzige Schwestern, Linz, Austria. christian.lampl@bhs.at.
authors.forename: Christian
authors.initials: C
authors.lastname: Lampl
authors.forename: Rigmor
authors.initials: R
authors.lastname: Jensen
authors.forename: Paolo
authors.initials: P
authors.lastname: Martelletti
authors.forename: Dimos-Dimitrios
authors.initials: DD
authors.lastname: Mitsikostas
mesh_terms: D005060:Europe; D020773:Headache Disorders / Q000145:classification*; D006801:Humans; D010148:Intractable Pain / Q000145:classification*; D014837:Voluntary Health Agencies / Q000592:standards*