RT Journal Article SR Electronic T1 Post Spinal Headache with 25-GA and 27-GA Quincke Needles JF Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 40 OP 40 DO 10.1136/rapm-00115550-199318011-00038 VO 18 IS Suppl 1 A1 L. E. Imbelloni A1 A. N.G. Carneiro A1 M.G.C. Sobral YR 1993 UL http://rapm.bmj.com/content/18/Suppl_1/40.abstract AB