title: Chronic cerebrospinal venous insufficiency and multiple sclerosis: science or science fiction?
authors.forename: Omar
authors.initials: O
authors.lastname: Khan
authors.forename: Alexandros
authors.initials: A
authors.lastname: Tselis
mesh_terms: D002490:Central Nervous System / Q000098:blood supply* / Q000000981:diagnostic imaging; D006801:Humans; D009103:Multiple Sclerosis / Q000150:complications / Q000000981:diagnostic imaging / Q000503:physiopathology*; D014463:Ultrasonography; D014689:Venous Insufficiency / Q000150:complications / Q000000981:diagnostic imaging / Q000503:physiopathology*