title: Cluster headache in twins.
authors.forename: C
authors.initials: C
authors.lastname: Roberge
authors.forename: J P
authors.initials: JP
authors.lastname: Bouchard
authors.forename: D
authors.initials: D
authors.lastname: Simard
authors.forename: R
authors.initials: R
authors.lastname: Gagné
mesh_terms: D000293:Adolescent; D000328:Adult; D003027:Cluster Headache / Q000235:genetics*; D004200:Diseases in Twins; D006801:Humans; D008297:Male; D014430:Twins, Monozygotic