RT Journal Article SR Electronic T1 Patient-controlled sedation during epidural anesthesia JF Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 19 OP 19 DO 10.1136/rapm-00115550-199015011-00019 VO 15 IS Suppl 1 A1 Park, Woo Young A1 Poon, Kwok C. YR 1990 UL http://rapm.bmj.com/content/15/Suppl_1/19.abstract AB