RT Journal Article SR Electronic T1 Sphenopalatine Ganglion Block Under Vision Using Rigid Nasal Sinuscope JF Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 139 OP 140 DO 10.1136/rapm-00115550-199318020-00020 VO 18 IS 2 A1 Prasanna, Athma A1 Murthy, P. S. N. YR 1993 UL http://rapm.bmj.com/content/18/2/139.2.abstract AB