RT Journal Article SR Electronic T1 Response: Re: Post-Epidural 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 592 OP 592 DO 10.3122/jabfm.2009.05.090109 VO 22 IS 5 A1 Brian V. Reamy YR 2009 UL http://www.jabfm.org/content/22/5/592.abstract AB