title: Male preponderance of cluster headache is progressively decreasing over the years.
authors.affiliation: Headache Centre, University of Parma, Italy.
authors.forename: G C
authors.initials: GC
authors.lastname: Manzoni
mesh_terms: D000328:Adult; D003027:Cluster Headache / Q000453:epidemiology*; D005260:Female; D006801:Humans; D007558:Italy / Q000453:epidemiology; D008297:Male; D015995:Prevalence; D012737:Sex Factors