RT Journal Article SR Electronic T1 Severe Deformation of a 25-gauge Whitacre Spinal Needle JF Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 293 OP 294 DO 10.1136/rapm-00115550-199419040-00015 VO 19 IS 4 A1 Kwan, Wing Fai A1 Lee, Chingmuh A1 Chen, Biing-Jaw YR 1994 UL http://rapm.bmj.com/content/19/4/293.2.abstract AB