title: Illicit drugs and cluster headache: an inevitable discussion.
authors.forename: Arne
authors.initials: A
authors.lastname: May
mesh_terms: D003027:Cluster Headache / Q000453:epidemiology*; D005260:Female; D006801:Humans; D013287:Illicit Drugs; D008297:Male; D019966:Substance-Related Disorders / Q000453:epidemiology*
chemical_list: D013287:Illicit Drugs