RT Journal Article SR Electronic T1 Re: Postepidural Headache: How Late Can It Occur? JF The Journal of the American Board of Family Medicine JO J Am Board Fam Med FD American Board of Family Medicine SP 591 OP 592 DO 10.3122/jabfm.2009.05.090098 VO 22 IS 5 A1 Sadeq A. Quraishi YR 2009 UL http://www.jabfm.org/content/22/5/591.2.abstract AB