title: Proceedings: The second sac: a complicating factor in regimens based on intrathecal medications.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D004388:Dura Mater; D005260:Female; D006801:Humans; D007278:Injections, Spinal / Q000009:adverse effects*; D008297:Male; D009192:Myelography; D013115:Spinal Canal; D013129:Spinal Puncture / Q000009:adverse effects*