RT Journal Article SR Electronic T1 Choice of epidural anesthetic drug affects duration and hospital admission rate in outpatient eswl patients JF Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 7 OP 7 DO 10.1136/rapm-00115550-198813011-00007 VO 13 IS Suppl 1 A1 Dan J. Kopacz A1 Michael F. Mulroy YR 1988 UL http://rapm.bmj.com/content/13/Suppl_1/7.abstract AB