Time vs. success rate for epidural blood patch.
D000293:Adolescent; D000328:Adult; D004388:Dura Mater; D005260:Female; D006261:Headache / Q000209:etiology / Q000628:therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011677:Punctures / Q000009:adverse effects*; D013997:Time Factors