RT Journal Article SR Electronic T1 Comparative study of two protocols of small-dose bupivacaine spinal anaesthesia for urologic surgery in elderly: 41. JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 20 OP 20 DO 10.1053/rapm-00115550-200309001-00036 VO 28 IS Suppl 1 A1 O Kaabachi YR 2003 UL http://rapm.bmj.com/content/28/Suppl_1/20.1.abstract AB