RT Journal Article SR Electronic T1 59. The effect of fentanyl added to different dose of intrathecal bupivacaine on spinal anesthesia duration JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 69 OP 69 DO 10.1136/rapm-00115550-200509001-00128 VO 30 IS Suppl 1 A1 J Ko A1 HK Lee A1 IW Shin YR 2005 UL http://rapm.bmj.com/content/30/Suppl_1/69.2.abstract AB