RT Journal Article SR Electronic T1 Comparison of Two 3.5 Inch Hustead Needles JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 540 OP 541 DO 10.1016/j.rapm.2007.06.389 VO 32 IS 6 A1 Gadalla, Farida A1 Rieth, Elizabeth F. A1 Abramovitz, Sharon E. YR 2007 UL http://rapm.bmj.com/content/32/6/540.abstract AB