title: Epidural blood patch in treatment of chronic headache.
authors: P B
authors: PB
authors: Gaukroger
authors: P
authors: P
authors: Brownridge
mesh_terms: D001769:Blood; D002908:Chronic Disease; D004824:Epidural Space; D006261:Headache / Q000134:cerebrospinal fluid / Q000209:etiology / Q000628:therapy*; D006801:Humans; D007427:Intracranial Pressure