title: Prophylactic epidural blood patch: the controversy continues.
mesh_terms: D000767:Anesthesia, Epidural / Q000009:adverse effects*; D000773:Anesthesia, Obstetrical / Q000009:adverse effects*; D001804:Blood Transfusion, Autologous / Q000379:methods*; D004388:Dura Mater / Q000293:injuries; D004824:Epidural Space; D005260:Female; D006261:Headache / Q000209:etiology / Q000517:prevention & control*; D006801:Humans; D011247:Pregnancy