Poster 174 delayed postdural puncture headache? a case report. Boqing Chen, MD, PhD (UMDNJ-New Jersey Med Sch, Pine Brook, NJ); Todd Stitik, MD; Patrick Foye, MD, e-mail: Chenboqing@aol.comHeadacheInjections, epiduralRehabilitationdoi:10.1016/j.apmr.2004.07.242None...