title: Anomalies of the circle of Willis and atherosclerosis.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001344:Autopsy; D002648:Child; D002675:Child, Preschool; D002941:Circle of Willis / Q000002:abnormalities*; D006115:Greece; D006801:Humans; D007223:Infant; D002537:Intracranial Arteriosclerosis / Q000453:epidemiology / Q000209:etiology*; D008875:Middle Aged