RT Journal Article SR Electronic T1 Therapeutic Periradicular Injections: It’s a Gas! JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 988 OP 989 VO 26 IS 5 A1 Johnson, Blake A. YR 2005 UL http://www.ajnr.org/content/26/5/988.abstract AB